{"id":70607,"date":"2023-05-30T14:05:33","date_gmt":"2023-05-30T14:05:33","guid":{"rendered":"https:\/\/www.simscale.com\/?page_id=70607"},"modified":"2024-10-22T14:13:13","modified_gmt":"2024-10-22T14:13:13","slug":"multiphase-flow-globe-valve","status":"publish","type":"page","link":"https:\/\/www.simscale.com\/docs\/tutorials\/multiphase-flow-globe-valve\/","title":{"rendered":"Tutorial: Multiphase Flow Through a Globe Valve"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">This tutorial showcases how to use SimScale to run a transient, incompressible multiphase <a href=\"https:\/\/www.simscale.com\/product\/cfd\/\"  rel=\" noopener\">fluid simulation<\/a> of water flowing through a globe valve. <\/p>\n\n\n\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/Screenshot-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"1080\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/Screenshot-2.png\" alt=\"multiphase simscale globe valve representation\" class=\"wp-image-71197\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/Screenshot-2.png 1440w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/Screenshot-2-300x225.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/Screenshot-2-1024x768.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/Screenshot-2-768x576.png 768w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 1: Transient results for a multiphase flow through a globe valve using SimScale&#8217;s Multi-purpose solver<\/figcaption><\/figure>\n<\/div>\n\n\n<h2 id=\"overview\" class=\"wp-block-heading\" >Overview<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>This tutorial teaches how to:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Set up and run a transient incompressible multiphase simulation using the Multi-purpose solver;<\/li>\n\n\n\n<li>Assign phase fractions as initial conditions;<\/li>\n\n\n\n<li>Assign boundary conditions, multiple materials, and other properties to the simulation;<\/li>\n\n\n\n<li>Mesh with the automatic meshing algorithm in Multi-purpose.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>We are following the typical SimScale workflow:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Prepare the CAD model for the simulation;<\/li>\n\n\n\n<li>Set up the simulation;<\/li>\n\n\n\n<li>Create the mesh;<\/li>\n\n\n\n<li>Run the simulation and analyze the results.<\/li>\n<\/ol>\n\n\n\n<h2 id=\"prepare-the-cad-model-and-select-the-analysis-type\" class=\"wp-block-heading\" >1. Prepare the CAD Model and Select the Analysis Type<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To begin, click on the button below. It will copy the tutorial project containing the geometry into your Workbench.<\/p>\n\n\n\n<div class=\"hw-block hw-btnWrapper hw-btnWrapper--alignCenter \">\n    <a href=\"\/workbench?publiclink=8dd3e654-d52a-4615-9662-60f792cf9bc2\" class=\"hw-btn    \" rel=\"noopener noreferrer nofollow\" target=\"_blank\"    >\n        Import Tutorial into Workbench    <\/a>\n<\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\">The following picture demonstrates what is visible after importing the tutorial project.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/1.-original-geometry.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"837\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/1.-original-geometry.png\" alt=\"cad model imported to workbench\" class=\"wp-image-71145\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/1.-original-geometry.png 1920w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/1.-original-geometry-300x131.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/1.-original-geometry-1024x446.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/1.-original-geometry-768x335.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/1.-original-geometry-1536x670.png 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 2: Imported CAD model of a globe valve in the SimScale Workbench<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">The geometry consists of the actual Globe Valve. It consists of multiple parts as can be observed in the scene tree.<\/p>\n\n\n\n<h3 id=\"geometry-preparation\" class=\"wp-block-heading\" >1.1 Geometry Preparation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The geometry for this tutorial is not ready for CFD simulations. It contains multiple solid parts of the valve. For a multiphase analysis, we need a single flow volume region.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To create a flow volume click on the <strong>&#8216;Edit a Copy&#8217;<\/strong> icon to enter the CAD edition mode.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-16.png\"><img loading=\"lazy\" decoding=\"async\" width=\"628\" height=\"303\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-16.png\" alt=\"Edit CAD Valve\" class=\"wp-image-93575\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-16.png 628w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-16-300x145.png 300w\" sizes=\"auto, (max-width: 628px) 100vw, 628px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 3: Edit CAD is an environment within SimScale that allows modifications to the existing geometry to prepare it for the simulation.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Now perform the following steps:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-17.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1877\" height=\"795\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-17.png\" alt=\"Internal flow operation\" class=\"wp-image-93576\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-17.png 1877w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-17-300x127.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-17-1024x434.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-17-768x325.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-17-1536x651.png 1536w\" sizes=\"auto, (max-width: 1877px) 100vw, 1877px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 4: Internal flow operation creates a volume region that fluids will occupy.<\/figcaption><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li>Select the <strong>&#8216;Internal Flow Volume operation&#8217;<\/strong>. This will lead to a settings panel where the user needs to define a seed face and boundary faces. <\/li>\n\n\n\n<li>Assign the internal surface as a <em>seed face<\/em>.<\/li>\n\n\n\n<li>Assign the two faces at the entry and exit boundaries as <em>boundary faces<\/em>.<\/li>\n\n\n\n<li>Click <strong>&#8216;Apply&#8217;<\/strong>.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-simscale wp-block-embed-simscale\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"kIazf9Y98I\"><a href=\"https:\/\/www.simscale.com\/knowledge-base\/flow-volume-extraction\/\">How To Create Flow Volume Extraction?<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;How To Create Flow Volume Extraction?&#8221; &#8212; SimScale\" src=\"https:\/\/www.simscale.com\/knowledge-base\/flow-volume-extraction\/embed\/#?secret=gV1dpnBVDj#?secret=kIazf9Y98I\" data-secret=\"kIazf9Y98I\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Notice that there is a new volume entity called <em>Flow region<\/em> under the parts list at the very end (see Figure 5). This is the only region that will involve the fluid interaction and which will be required for the CFD simulation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To delete the remaining parts, <\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Select <strong>&#8216;Flow region&#8217;<\/strong> <\/li>\n\n\n\n<li>Right-click to select <strong>&#8216;Invert selection&#8217;<\/strong> from the drop-down<\/li>\n\n\n\n<li>Choose the <strong>&#8216;Delete&#8217;<\/strong> body option and select all bodies except the flow region, and hit <strong>&#8216;Apply&#8217;<\/strong>.<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-18.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1877\" height=\"793\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-18.png\" alt=\"flow region edit cad\" class=\"wp-image-93577\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-18.png 1877w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-18-300x127.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-18-1024x433.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-18-768x324.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-18-1536x649.png 1536w\" sizes=\"auto, (max-width: 1877px) 100vw, 1877px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 5: Select everything besides the flow region and delete it.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">The user will be left with only the flow region. Use the <strong>&#8216;Save&#8217;<\/strong> button to use this new geometry.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-19.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1877\" height=\"795\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-19.png\" alt=\"edit cad simscale\" class=\"wp-image-93578\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-19.png 1877w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-19-300x127.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-19-1024x434.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-19-768x325.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-19-1536x651.png 1536w\" sizes=\"auto, (max-width: 1877px) 100vw, 1877px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 6: Saving the geometry as a copy<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">The modified geometry (<em>Flow region<\/em>) will appear under <em>Geometries<\/em> as a copy of the original valve geometry.<\/p>\n\n\n\n<h3 id=\"create-the-simulation\" class=\"wp-block-heading\" >1.2 Create the Simulation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Rename the new geometry to <strong>&#8216;Valve flow region&#8217;<\/strong> and hit the <strong>&#8216;Create Simulation&#8217;<\/strong> button.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-20.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1302\" height=\"622\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-20.png\" alt=\"globe valve\" class=\"wp-image-93579\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-20.png 1302w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-20-300x143.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-20-1024x489.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/07\/image-20-768x367.png 768w\" sizes=\"auto, (max-width: 1302px) 100vw, 1302px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 7: Renaming the exported geometry and creating a new simulation for the globe valve.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">This will open the simulation type selection widget:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-63.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1167\" height=\"775\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-63.png\" alt=\"Multi-purpose analysis type\" class=\"wp-image-94756\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-63.png 1167w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-63-300x199.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-63-1024x680.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-63-768x510.png 768w\" sizes=\"auto, (max-width: 1167px) 100vw, 1167px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 8: Library of analysis types available in SimScale. Choose the <strong>&#8216;Multi-purpose&#8217;<\/strong> analysis type.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Choose <strong>&#8216;Multi-purpose&#8217;<\/strong> as the analysis type and <strong>&#8216;Create Simulation&#8217;<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At this point, the simulation tree will be visible in the left-hand side panel. To run the simulation, it&#8217;s necessary to configure the simulation tree entries.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-64.png\"><img loading=\"lazy\" decoding=\"async\" width=\"730\" height=\"649\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-64.png\" alt=\"Multi-purpose multiphase global settings simscale\" class=\"wp-image-94797\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-64.png 730w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-64-300x267.png 300w\" sizes=\"auto, (max-width: 730px) 100vw, 730px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 9: Global simulation settings for the globe valve tutorial. Select <strong>&#8216;Transient&#8217;<\/strong> <em>Time dependency<\/em> to toggle on <em>Multiphase<\/em>.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.simscale.com\/docs\/simulation-setup\/global-settings\/\">global simulation<\/a> settings will be adjusted for <em>Time dependency<\/em> to <strong>&#8216;Transient&#8217;<\/strong> and the Toggle <strong>&#8216;Multiphase&#8217;<\/strong> as in Figure 9. This is the only way a multiphase analysis can be performed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We are simulating two materials, air and water. So let the number of phases be 2.<\/p>\n\n\n\n<div class=\"hw-block hw-note hw-note--success hw-note\">\n    <div class=\"hw-note__title\">\n        <p class=\"hw-note__titleText\"><i class=\"fa fa-exclamation-circle\" aria-hidden=\"true\"><\/i>Did you know?<\/p>\n    <\/div>\n    <div class=\"hw-note__body\">\n        <p>A multiphase analysis is used to simulate the time-dependent behavior of incompressible, isothermal, immiscible fluid mixtures using the VOF (Volume of Fluid) method.<\/p>\n    <\/div>\n<\/div>\n\n\n\n<h2 id=\"pre-processing-setting-up-the-simulation\" class=\"wp-block-heading\" >2. Pre-Processing: Setting up the Simulation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The following picture shows an overview of the boundary conditions. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/8.-overview-bc.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1092\" height=\"529\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/8.-overview-bc.png\" alt=\"globe  valve boundary conditions\" class=\"wp-image-71152\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/8.-overview-bc.png 1092w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/8.-overview-bc-300x145.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/8.-overview-bc-1024x496.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/8.-overview-bc-768x372.png 768w\" sizes=\"auto, (max-width: 1092px) 100vw, 1092px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 10: Overview of the boundary conditions acting on the valve geometry, velocity inlet, pressure outlet, and no-slip walls.<\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"modeling-gravity\" class=\"wp-block-heading\" >2.1 Modeling Gravity<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For the current scenario, we will include the gravitational acceleration effects in the flow physics as well. <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/9.-gravity.png\"><img loading=\"lazy\" decoding=\"async\" width=\"932\" height=\"657\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/9.-gravity.png\" alt=\"modeling gravity in simscale for the globe valve tutorial\" class=\"wp-image-71153\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/9.-gravity.png 932w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/9.-gravity-300x211.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/9.-gravity-768x541.png 768w\" sizes=\"auto, (max-width: 932px) 100vw, 932px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 11: Modeling gravity into the flow physics. <\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Click on <strong>&#8216;Model&#8217;<\/strong> from the simulation tree and set <em>g<sub>y<\/sub><\/em> to <strong>&#8216;-9.81&#8217;<\/strong> \\(m\/s^2\\).<\/p>\n\n\n\n<h3 id=\"define-a-material\" class=\"wp-block-heading\" >2.2 Define a Material<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">This simulation will begin with air initially present in the valve followed by water entering through the inlet. Therefore, this simulation will use air and water as two materials. Hence, click on the<strong> &#8216;+ button&#8217;<\/strong> next to <em>Materials<\/em>. In doing so, the SimScale fluid material library opens, as shown in the figure below:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/10.-water-material.png\"><img loading=\"lazy\" decoding=\"async\" width=\"772\" height=\"777\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/10.-water-material.png\" alt=\"selecting materials for multiphase analysis in simscale\" class=\"wp-image-71154\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/10.-water-material.png 772w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/10.-water-material-298x300.png 298w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/10.-water-material-150x150.png 150w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/10.-water-material-768x773.png 768w\" sizes=\"auto, (max-width: 772px) 100vw, 772px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 12: Library of available fluid materials in SimScale. Select <strong>&#8216;Water&#8217;<\/strong> as the material. Repeat the procedure and select <strong>&#8216;Air&#8217;<\/strong>.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Select <strong>&#8216;Water&#8217;<\/strong> and click <strong>&#8216;Apply&#8217;<\/strong>. Set the associated phase quantity to <strong>&#8216;Phase 1&#8217;<\/strong>. This means water will be recognized by a phase fraction value of 1 throughout the simulation. Keep the default values, and assign the entire <em>Flow region<\/em> to it (if not already by default).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-66.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"324\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-66-1024x324.png\" alt=\"Multi-purpose water phase assignment\" class=\"wp-image-94814\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-66-1024x324.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-66-300x95.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-66-768x243.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-66-1536x486.png 1536w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-66.png 1604w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 13: Note that the Flow region receives a material assignment. Rename the material to <strong>&#8216;Water (Phase 1)&#8217;<\/strong> to avoid confusion.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Repeat the same procedure for the material air. However, the <em>Associated phase<\/em> will be <strong>&#8216;Phase 0&#8217;<\/strong>. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-67.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"328\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-67-1024x328.png\" alt=\"Multi-purpose air phase assignment\" class=\"wp-image-94815\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-67-1024x328.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-67-300x96.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-67-768x246.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-67-1536x491.png 1536w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-67.png 1604w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 14: This time assign air to the <em>Flow region<\/em>. Rename the material to <strong>&#8216;Air (Phase 0)&#8217;<\/strong> to avoid confusion.<\/figcaption><\/figure>\n\n\n\n<h3 id=\"assign-the-initial-conditions\" class=\"wp-block-heading\" >2.2 Assign the Initial Conditions<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">As mentioned above, initially only air is present. This needs to be defined as an initial condition. Click on the <strong>&#8216;+&#8217;<\/strong> icon next to <em>Initial conditions &gt; Phase fractions &gt; Subdomains<\/em> and perform the following:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-65.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1913\" height=\"506\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-65.png\" alt=\"initial phase fraction definition in multi-purpose multiphase simscale\" class=\"wp-image-94810\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-65.png 1913w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-65-300x79.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-65-1024x271.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-65-768x203.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-65-1536x406.png 1536w\" sizes=\"auto, (max-width: 1913px) 100vw, 1913px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 15: In a Multi-purpose multiphase analysis initial conditions are used to define phase fractions, i.e. initially the quantity of air and water present.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ensure that the value of <em>Phase 0<\/em> (air) is <strong>&#8216;1&#8217;<\/strong> and <em>Phase 1<\/em> (water) is <strong>&#8216;0&#8217;<\/strong>. Assign it to the entire flow region.<\/p>\n\n\n\n<h3 id=\"assign-the-boundary-conditions\" class=\"wp-block-heading\" >2.3 Assign the Boundary Conditions<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In the next step, boundary conditions need to be assigned as shown in Figure 16. We have a velocity inlet and a pressure outlet. The rest are walls assigned by default.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"velocity-inlet\"><strong>a. Velocity Inlet<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Click on the <strong>&#8216;+ button&#8217;<\/strong> next to boundary conditions. A drop-down menu will appear, where one can choose between different boundary conditions.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-68.png\"><img loading=\"lazy\" decoding=\"async\" width=\"473\" height=\"483\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-68.png\" alt=\"velocity inlet boundary condition\" class=\"wp-image-94816\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-68.png 473w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-68-294x300.png 294w\" sizes=\"auto, (max-width: 473px) 100vw, 473px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 16: Boundary conditions available in SimScale. From the list, choose <strong>&#8216;Velocity inlet&#8217;<\/strong>.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">After selecting <strong>&#8216;Velocity inlet&#8217;<\/strong>, the user has to specify some parameters and assign faces. Please proceed as below:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/15.-velocity-inlet.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1126\" height=\"734\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/15.-velocity-inlet.png\" alt=\"velocity inlet in multiphase analysis\" class=\"wp-image-71159\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/15.-velocity-inlet.png 1126w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/15.-velocity-inlet-300x196.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/15.-velocity-inlet-1024x668.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/15.-velocity-inlet-768x501.png 768w\" sizes=\"auto, (max-width: 1126px) 100vw, 1126px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 17: Assign a <strong>&#8216;2e-4&#8217;<\/strong> \\(m^3\/s\\) volumetric flow rate to the inlet face.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">The Globe valve receives a mixture of 25% air and 75% water. This means the fraction value of phase 0 is 0.25 and that of phase 1 is 0.75. This mixture will enter through the inlet face at a volumetric flow rate of <strong>&#8216;2e-4&#8217;<\/strong> \\(m^3\/s\\).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"pressure-outlet\"><strong>b. Pressure Outlet<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Create a new boundary condition, this time a&nbsp;<strong>\u2018Pressure outlet\u2019,<\/strong>&nbsp;and select the outlet face. Make sure&nbsp;<em>(P) Gauge Pressure<\/em>&nbsp;is set to a fixed value of&nbsp;<strong>\u20180\u2019<\/strong>&nbsp;\\(Pa\\).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-69.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1184\" height=\"655\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-69.png\" alt=\"pressure outlet in multiphase analysis\" class=\"wp-image-94817\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-69.png 1184w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-69-300x166.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-69-1024x566.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-69-768x425.png 768w\" sizes=\"auto, (max-width: 1184px) 100vw, 1184px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 18: The outlet face receives a fixed pressure boundary condition. For incompressible flows, the gauge pressure is considered.<\/figcaption><\/figure>\n<\/div>\n\n\n<div class=\"hw-block hw-note hw-note--success hw-note\">\n    <div class=\"hw-note__title\">\n        <p class=\"hw-note__titleText\"><i class=\"fa fa-exclamation-circle\" aria-hidden=\"true\"><\/i>Did you know?<\/p>\n    <\/div>\n    <div class=\"hw-note__body\">\n        <p><p>A globe valve is used for regulating flow in a pipeline, consisting of a movable plug or disc element and a stationary ring seat in a generally spherical body.\\(^1\\)<\/p><p>Unlike in the past, many modern globe valves do not have much of a spherical shape. However, the term globe valve is still used for valves that have such an internal mechanism.\\(^1\\)<\/p><\/p>\n    <\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"wall\"><strong>c. Walls<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In Multi-purpose analysis, all the surfaces that act as walls are automatically treated likewise by the solver itself. So there is no need to assign them separately.<\/p>\n\n\n\n<h3 id=\"simulation-control\" class=\"wp-block-heading\" >2.4 Simulation Control<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Don\u2019t worry about the numerical settings for this simulation, as their default values are optimized. Open the simulation control settings and change the following:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-70.png\"><img loading=\"lazy\" decoding=\"async\" width=\"420\" height=\"372\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-70.png\" alt=\"simulation control settings for the multiphase simulation in simscale\" class=\"wp-image-94818\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-70.png 420w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-70-300x266.png 300w\" sizes=\"auto, (max-width: 420px) 100vw, 420px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 19: Simulation control transient settings for the multiphase globe valve tutorial. <em>End time<\/em> and time step <em>Delta t<\/em> can be experimented with until desired results are achieved.<\/figcaption><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><em>End time:<\/em> \n<ul class=\"wp-block-list\">\n<li>The distance between the inlet and the outlet as well as the surface area at the inlet can be calculated using the <em>Geometry Info<\/em>. Using the flow rate and the inlet area an approximate value for the inlet velocity can be calculated too. <\/li>\n\n\n\n<li>For at least 3 fluid passes (fluid entering and exiting the valve) the time can be calculated as ~0.8 seconds which can be rounded off to <strong>&#8216;1&#8217;<\/strong> second. You can run it for longer end times until a desired convergence is obtained.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><em>Delta t: <\/em>Keep it as <strong>&#8216;0.002&#8217;<\/strong> seconds. The solver is robust to handle time steps over a large range of CFL number.<\/li>\n\n\n\n<li>Write interval: We will write results every <strong>&#8217;10&#8217;<\/strong> time steps.<\/li>\n\n\n\n<li><em>Maximum runtime:<\/em> Transient simulations run longer. For this one set the maximum runtime to <strong>&#8216;8.64e4&#8217;<\/strong> secs.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Keep the remaining settings as default. To know more about how to control the simulation read in detail&nbsp;<a href=\"https:\/\/www.simscale.com\/docs\/analysis-types\/subsonic-cartesian\/#simulation-control\">here<\/a>.<\/p>\n\n\n\n<h3 id=\"result-control\" class=\"wp-block-heading\" >2.5 Result Control<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Result control allows you to observe the convergence behavior globally as well as at specific locations in the model during the calculation process. Hence, it is an important indicator of the simulation quality and the reliability of the results.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>a. Forces and Moments<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For this simulation, please set a&nbsp;<strong>\u2018Forces and moments\u2019<\/strong>&nbsp;control on the &#8220;plug&#8221; of the valve. Click on the <strong>&#8216;+&#8217;<\/strong> icon under <em>Result control&gt; Forces and moments<\/em> to open the settings panel as shown below:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"460\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-1-e1724072196187.png\" alt=\"forces and moments\" class=\"wp-image-71193\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-1-e1724072196187.png 320w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-1-e1724072196187-209x300.png 209w\" sizes=\"auto, (max-width: 320px) 100vw, 320px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Follow the steps carefully:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Close the settings panel. <\/li>\n\n\n\n<li>Hide all the outer surfaces until the inner plug is visible. \n<ul class=\"wp-block-list\">\n<li>To hide faces, select them and right-click to select the <strong>&#8216;Hide selection&#8217;<\/strong> option from the drop-down. Continue until you see the plug as in Figure 21. <\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1115\" height=\"783\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-2.png\" alt=\"activate box selection tool to select multiple faces at once\" class=\"wp-image-71194\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-2.png 1115w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-2-300x211.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-2-1024x719.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/forces-and-moments-2-768x539.png 768w\" sizes=\"auto, (max-width: 1115px) 100vw, 1115px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 21: <em>Activate box selection<\/em> tool helps in the quick selection of multiple faces of the CAD.<\/figcaption><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>Open the settings panel again by clicking on <strong>&#8216;Forces and moments 1&#8217;<\/strong> (see Figure 20).<\/li>\n\n\n\n<li>Then activate the box selection tool and create a box from left to right to assign all <strong>11<\/strong> faces of the plug to this result control item.<\/li>\n\n\n\n<li>Enter the center of rotation coordinates.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>c. Pressure Difference<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We can also get the pressure difference between the inlet and the outlet directly as follows:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-71.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"497\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-71-1024x497.png\" alt=\"pressure difference calculation in simscale\" class=\"wp-image-94819\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-71-1024x497.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-71-300x145.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-71-768x372.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-71.png 1454w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 22: Static pressure difference direct calculation as a result control item<\/figcaption><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>Click on the <strong>&#8216;+&#8217;<\/strong> icon next to <em>Surface data<\/em>. <\/li>\n\n\n\n<li>Set the inlet and outlet face pressure type to <strong>&#8216;Static pressure&#8217;<\/strong>.<\/li>\n\n\n\n<li>Assign the inlet and outlet faces as shown.<\/li>\n\n\n\n<li>Ensure that <em>Apply Absolute Value<\/em> is toggled on for a non-negative pressure difference. <\/li>\n<\/ul>\n\n\n\n<h2 id=\"mesh\" class=\"wp-block-heading\" >3. Mesh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To create the mesh, we recommend using the <em>Automatic<\/em> mesh<em> <\/em>algorithm, which is a good choice in general as it is quite automated and delivers good results for most geometries.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this tutorial, a mesh fineness level of 4 will be used. If you wish to undertake a mesh refinement study, you can increase the fineness of the mesh by sliding the mesh to higher refinement levels or using <a href=\"https:\/\/www.simscale.com\/docs\/analysis-types\/subsonic-cartesian\/#region-refinements\">the region refinements<\/a>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-72.png\"><img loading=\"lazy\" decoding=\"async\" width=\"420\" height=\"198\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-72.png\" alt=\"automatic mesh fineness 4 in multiphase analysis\" class=\"wp-image-94820\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-72.png 420w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-72-300x141.png 300w\" sizes=\"auto, (max-width: 420px) 100vw, 420px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 23: Automatic mesh settings for the Multi-purpose cartesian mesher<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Since this is a transient simulation it is recommended to start with coarse mesh settings and gradually increase if required to save on core hours.<\/p>\n\n\n\n<div class=\"hw-block hw-note hw-note--success hw-note\">\n    <div class=\"hw-note__title\">\n        <p class=\"hw-note__titleText\"><i class=\"fa fa-exclamation-circle\" aria-hidden=\"true\"><\/i>Did you know?<\/p>\n    <\/div>\n    <div class=\"hw-note__body\">\n        <p>The automesher creates a body-fitted mesh which captures most regions of interest using   physics based meshing.\r\n<br>\r\n\r\nIf you are using the manual mesher, you can learn how to set up different parameters in this  <a href=\"https:\/\/www.simscale.com\/docs\/analysis-types\/subsonic-cartesian\/#manual\">Multi-purpose manual meshing<\/a> documentation page.<\/p>\n    <\/div>\n<\/div>\n\n\n\n<h2 id=\"start-the-simulation\" class=\"wp-block-heading\" >4. Start the Simulation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Now you can start the simulation. Click on the <strong>&#8216;+&#8217;<\/strong> icon next to Simulation runs. This opens up a dialogue box where you can name your run and <strong>&#8216;Start&#8217;<\/strong> the simulation. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-74.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"431\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-74-1024x431.png\" alt=\"new run dialog box\" class=\"wp-image-94829\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-74-1024x431.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-74-300x126.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-74-768x323.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-74-1536x646.png 1536w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-74.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 24: Simulation setup is now ready to run simulations<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">While the results are being calculated you can already have a look at the intermediate results in the post-processor by clicking on <strong>&#8216;Solution Fields&#8217;<\/strong> or <strong>&#8216;Post-process results&#8217;<\/strong>. They are being updated in real-time!<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/21.-run-finished-e1724077144561.png\"><img decoding=\"async\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/21.-run-finished.png\" alt=\"finished run\" class=\"wp-image-71165\"\/><\/a><figcaption class=\"wp-element-caption\">Figure 25: During the simulation run and after it&#8217;s finished you can access the post-processor by clicking on <strong>&#8216;Solution Fields&#8217;<\/strong> or <strong>&#8216;Post-process results&#8217;<\/strong>.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Depending on the instance chosen by the machine, it might take 5-10 minutes for the simulation to finish. <\/p>\n\n\n\n<h2 id=\"post-processing\" class=\"wp-block-heading\" >5. Post-Processing<\/h2>\n\n\n\n<h3 id=\"visualizing-the-mesh\" class=\"wp-block-heading\" >5.1 Visualizing the Mesh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Once inside the post-processor, under the <em>Parts Color<\/em> filter change <em>Coloring<\/em> to any solid color of choice and then change the render mode to <em>Surfaces with mesh<\/em> to show opaque surfaces of the CAD model with the mesh grid.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/22.-mesh.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1037\" height=\"700\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/22.-mesh.png\" alt=\"parts color surface with mesh simscale online post-processor\" class=\"wp-image-71166\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/22.-mesh.png 1037w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/22.-mesh-300x203.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/22.-mesh-1024x691.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/22.-mesh-768x518.png 768w\" sizes=\"auto, (max-width: 1037px) 100vw, 1037px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 26: Mesh visualization inside SimScale&#8217;s online post-processor<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You can use the cutting plane filter to see the inside of the mesh generated:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-76.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"551\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-76-1024x551.png\" alt=\"cutting plane filter mesh solid color\" class=\"wp-image-94839\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-76-1024x551.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-76-300x161.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-76-768x413.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-76.png 1445w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 27: Inspecting the mesh in detail using a cutting plane<\/figcaption><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Hit the <strong>&#8216;Cutting Plane&#8217;<\/strong> filter from the top ribbon.<\/li>\n\n\n\n<li>Adjust the position accordingly.<\/li>\n\n\n\n<li>Adjust the orientation to <strong>&#8216;X&#8217;<\/strong> axis.<\/li>\n\n\n\n<li>Change the <em>Coloring<\/em> to some contrasting solid color.<\/li>\n\n\n\n<li>Toggle on <em>Show mesh <\/em>so that the mesh can be visible.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">After a few seconds, you will see a clip showing the inside of your mesh. This mesh looks sufficient for this tutorial.<\/p>\n\n\n\n<h3 id=\"forces-and-moments-on-the-plug\" class=\"wp-block-heading\" >5.2 Forces and Moments on the Plug<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <em>Forces and moments<\/em> results are of particular interest in a simulation with a valve. The plug will be subjected to pressure forces from the incoming water. Hence, let&#8217;s inspect the resulting pressure forces and moments on the plug:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/24.-forces.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1901\" height=\"818\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/24.-forces.png\" alt=\"forces and moments plot transient analysis multiphase globe valve\" class=\"wp-image-71168\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/24.-forces.png 1901w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/24.-forces-300x129.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/24.-forces-1024x441.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/24.-forces-768x330.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/24.-forces-1536x661.png 1536w\" sizes=\"auto, (max-width: 1901px) 100vw, 1901px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 28: Forces and moments acting on the plug of the valve are shown here against time. <\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Figure 28 shows multiple runs performed with end times of 0.5, 1, and 2 seconds. For this tutorial purposes (end time of 1 second) the curves seem to be still fluctuating and more time steps might be required until a predictable pattern is observed.<\/p>\n\n\n\n<h3 id=\"pressure-drop\" class=\"wp-block-heading\" >5.3 Pressure Drop<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most important parameters to observe when evaluating the performance of a globe valve is how much the pressure drops after the water has flown through the valve.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/25.-pressure-drop.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1903\" height=\"820\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/25.-pressure-drop.png\" alt=\"pressure difference direct plot transient analysis multiphase globe valve\" class=\"wp-image-71169\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/25.-pressure-drop.png 1903w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/25.-pressure-drop-300x129.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/25.-pressure-drop-1024x441.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/25.-pressure-drop-768x331.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/25.-pressure-drop-1536x662.png 1536w\" sizes=\"auto, (max-width: 1903px) 100vw, 1903px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 29: Pressure difference between the inlet and the outlet as set up under the result control can be visualized here.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">The transient nature of the pressure difference curve seems to be converging towards the end. Like the force plot, more time steps might be required to confirm a predictable pattern.<\/p>\n\n\n\n<h3 id=\"particle-traces\" class=\"wp-block-heading\" >5.4 Particle Traces<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Streamlines can be a great tool to visualize flow patterns. Follow the steps below to show the flow streamlines inside the valve:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/26.-particle-trace.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"839\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/26.-particle-trace.png\" alt=\"particle traces on multiphase globe valve\" class=\"wp-image-71170\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/26.-particle-trace.png 1920w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/26.-particle-trace-300x131.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/26.-particle-trace-1024x447.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/26.-particle-trace-768x336.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/26.-particle-trace-1536x671.png 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 30: The particle trace filter tracks the path of the fluid as it travels across the domain<\/figcaption><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Remove any predefined filters and click on <strong>&#8216;Particle Trace&#8217;<\/strong> on the top filters ribbon.<\/li>\n\n\n\n<li>Ensure that the <em>Pick position<\/em> icon <img loading=\"lazy\" decoding=\"async\" width=\"28\" height=\"28\" class=\"wp-image-33850\" style=\"width: 28px;\" nonce=\"cb65f54519cb8a45e24fd50426abdd24\" src=\"https:\/\/frontend-assets.simscale.com\/media\/2020\/10\/PickButton.jpg\" alt=\"pick position button\"> is activated.<\/li>\n\n\n\n<li>Ensure that the front view for the geometry is aligned with the plane of your screen.<\/li>\n\n\n\n<li>Choose the inlet as the seed face for the traces to be generated.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Now repeat the process, but this time select the outlet as a seed face.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/27.-particle-trace-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1137\" height=\"768\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/27.-particle-trace-2.png\" alt=\"particle traces on multiphase globe valve translucent surfaces\" class=\"wp-image-71171\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/27.-particle-trace-2.png 1137w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/27.-particle-trace-2-300x203.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/27.-particle-trace-2-1024x692.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/27.-particle-trace-2-768x519.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/27.-particle-trace-2-368x250.png 368w\" sizes=\"auto, (max-width: 1137px) 100vw, 1137px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 31: Tracing particles from both inlet and outlet will help to cover the entire valve flow domain. Here, the swirl toward the outlet region can be observed.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">After the traces are created, you can adjust the render mode to <strong>&#8216;Translucent surfaces&#8217;<\/strong> to give you a better view of the flow. Similarly, you can adjust the color of the parts for a better representation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We can see that the flow follows a circular motion in the outlet region due to the rotatory motion of the turbine.<\/p>\n\n\n\n<h3 id=\"pressure-phase-fraction-and-velocity-vectors-\" class=\"wp-block-heading\" >5.5 Pressure, Phase Fraction, and Velocity Vectors <\/h3>\n\n\n\n<h4 id=\"pressure-\" class=\"wp-block-heading\" >Pressure <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">To get more details on the flow behavior inside the valve, use the <em>Cutting plane<\/em> filter.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-75.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"839\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-75.png\" alt=\"cutting plane total pressure multiphase globe valve simscale\" class=\"wp-image-94833\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-75.png 1920w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-75-300x131.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-75-1024x447.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-75-768x336.png 768w, https:\/\/frontend-assets.simscale.com\/media\/2024\/08\/image-75-1536x671.png 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 32: All filters in SimScale are highly customizable, allowing for better visualization. Cutting plane showing total pressure distribution <strong>(inlet on right)<\/strong>.<\/figcaption><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li>Create a <strong>&#8216;Cutting plane&#8217;<\/strong> filter using the top ribbon. <\/li>\n\n\n\n<li>Adjust the <em>Orientation<\/em> of the cutting plane to the <strong>&#8216;Z&#8217;<\/strong> direction. <\/li>\n\n\n\n<li>Set the <em>Coloring<\/em> of the plane to <strong>&#8216;Total Pressure&#8217;<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">From Figure 32, you can see how the total pressure drops after the fluid air-water mixture crosses the valve plug section in the center and keeps decreasing towards the outlet. <\/p>\n\n\n\n<h4 id=\"phase-fraction-\" class=\"wp-block-heading\" >Phase Fraction <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Different parameters can be viewed by changing the <em>coloring<\/em>. In Figure 33 air is visualized on the same cutting plane:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/29.-phase-0.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1228\" height=\"769\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/29.-phase-0.png\" alt=\"air phase fraction cutting plane globe valve multiphase\" class=\"wp-image-71173\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/29.-phase-0.png 1228w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/29.-phase-0-300x188.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/29.-phase-0-1024x641.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/29.-phase-0-768x481.png 768w\" sizes=\"auto, (max-width: 1228px) 100vw, 1228px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 33: Cutting plane showing air (phase fraction 0) distribution across the globe at the end of the simulation. Most of the pure air is present on top.<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">In Figure 34 water is visualized on the same cutting plane:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/30.-phase-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1228\" height=\"768\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/30.-phase-1.png\" alt=\"water phase fraction cutting plane globe valve multiphase\" class=\"wp-image-71174\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/30.-phase-1.png 1228w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/30.-phase-1-300x188.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/30.-phase-1-1024x640.png 1024w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/30.-phase-1-768x480.png 768w\" sizes=\"auto, (max-width: 1228px) 100vw, 1228px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 34: Cutting plane showing water (phase fraction 1) distribution across the globe at the end of the simulation.  <\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Figures 33 and 34 complement each other with their information. Most of the valve is filled with the air-water mixture with a water fraction between 0.6-0.8 and an air fraction between 0.2-0.4. The top part of the valve surrounding the plug has more air content.<\/p>\n\n\n\n<h4 id=\"velocity-vectors-\" class=\"wp-block-heading\" >Velocity Vectors <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Vectors can also be interpreted on the cutting plane to understand the flow patterns.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/31.-velocity-vectors.png\"><img loading=\"lazy\" decoding=\"async\" width=\"979\" height=\"769\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/31.-velocity-vectors.png\" alt=\"vectors cutting plane multiphase globe valve\" class=\"wp-image-71175\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/31.-velocity-vectors.png 979w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/31.-velocity-vectors-300x236.png 300w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/31.-velocity-vectors-768x603.png 768w\" sizes=\"auto, (max-width: 979px) 100vw, 979px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 35: More information can be obtained from cutting planes using vectors. They can be colored based on other parameters as well.<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Adjust the <em>Orientation<\/em> of the cutting plane to the <strong>&#8216;X&#8217;<\/strong> direction. <\/li>\n\n\n\n<li>Change the <em>Coloring<\/em> of the plane to <strong>&#8216;Velocity Magnitude&#8217;<\/strong>. <\/li>\n\n\n\n<li>Toggle on <em>Vectors<\/em> and base its coloring with any contrasting solid color.<\/li>\n\n\n\n<li>Adjust the <em>Scale factor<\/em> of the vectors to <strong>&#8216;0.07&#8217;<\/strong> and the <em>Grid spacing<\/em> to <strong>&#8216;0.018&#8217;<\/strong>. <\/li>\n\n\n\n<li>Enable the <em>Project vectors onto plane<\/em> option.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Longer vector lengths signify higher velocity magnitudes. The flow is not strong towards the bottom and top. Now change the orientation to the other two planes for more insights.<\/p>\n\n\n\n<h3 id=\"animation\" class=\"wp-block-heading\" >5.6 Animation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Any effect of the applied filters can be animated. Select <strong>&#8216;Animation&#8217;<\/strong> from the top filter ribbon and click the play button under the <em>Animation<\/em> settings panel. Operate the animation commands as per your interests. <a href=\"https:\/\/www.simscale.com\/docs\/post-processing\/new-integrated-post-processor\/#animation\">Learn more<\/a>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/animation-controls.png\"><img loading=\"lazy\" decoding=\"async\" width=\"362\" height=\"620\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/animation-controls.png\" alt=\"animation control panel in simscale for multiphase globe valve\" class=\"wp-image-71813\" srcset=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/animation-controls.png 362w, https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/animation-controls-175x300.png 175w\" sizes=\"auto, (max-width: 362px) 100vw, 362px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure 36: Animation controls <\/figcaption><\/figure>\n<\/div>\n\n\n<figure class=\"wp-block-video\"><video height=\"1080\" style=\"aspect-ratio: 1440 \/ 1080;\" width=\"1440\" autoplay loop muted preload=\"none\" nonce='cb65f54519cb8a45e24fd50426abdd24' src=\"https:\/\/frontend-assets.simscale.com\/media\/2023\/05\/result.mp4\" playsinline><\/video><figcaption class=\"wp-element-caption\">Animation 1: Air-water mixture entering the valve from the inlet (right) from first to last time step.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">In this view, you can get insights into how the filling up of the globe valve takes place and what internal part designs are affecting the flow, allowing for optimizations in the design. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Analyze your results with the SimScale post-processor. Have a look at our <a href=\"https:\/\/www.simscale.com\/docs\/post-processing\/new-integrated-post-processor\/\">post-processing guide<\/a> to learn how to use the post-processor.<\/p>\n\n\n\n<div class=\"hw-block hw-btnWrapper hw-btnWrapper--alignCenter \">\n    <a href=\"https:\/\/www.simscale.com\/workbench\/?pid=5398791838642333580&#038;mi=spec%3A395093b3-5ff0-45e3-855e-a68c99ea74c7%2Cservice%3ASIMULATION%2Cstrategy%3A167607\" class=\"hw-btn  hw-btn--secondary  \" rel=\"noopener \" target=\"_blank\"    >\n        View Finished Project    <\/a>\n<\/div>\n\n\n\n\n\n<div class='hw-block hw-references hw-references'>\n    <p class='hw-references__title'>References<\/p>\n    <ul class='hw-references__list'>\n\n        <li><cite><a href=\"https:\/\/en.wikipedia.org\/wiki\/Globe_valve\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/en.wikipedia.org\/wiki\/Globe_valve<\/a><\/cite><\/li>\n    <\/ul>\n<\/div>\n\n\n\n<div class=\"hw-block hw-note hw-note--info hw-note\">\n    <div class=\"hw-note__title\">\n        <p class=\"hw-note__titleText\"><i class=\"fa fa-exclamation-circle\" aria-hidden=\"true\"><\/i>Note<\/p>\n    <\/div>\n    <div class=\"hw-note__body\">\n        <p>If you have questions or suggestions, please reach out either via the <a href=\"https:\/\/www.simscale.com\/forum\/\">forum<\/a> or <a href=\"mailto:support@simscale.com\">contact us<\/a> directly.<\/p>\n    <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>This tutorial showcases how to use SimScale to run a transient, incompressible multiphase fluid simulation of water...","protected":false},"author":118,"featured_media":71171,"parent":15320,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"templates\/template-documentation.php","meta":{"_acf_changed":false,"_crdt_document":"","inline_featured_image":false,"footnotes":""},"class_list":["post-70607","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/pages\/70607","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/users\/118"}],"replies":[{"embeddable":true,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/comments?post=70607"}],"version-history":[{"count":0,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/pages\/70607\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/pages\/15320"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/media\/71171"}],"wp:attachment":[{"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/media?parent=70607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}