SimcenterKnowledge

Command reference help topics > Fluid Domain dialog box (Flow/ESC)

Fluid Domain dialog box – Fluid Mesh options

Destination Folder
Simulation Object Container Specifies the folder in the Simulation Navigator in which the boundary condition will be stored. The list includes the root container and existing folders that you created using the New Folder command. Examples of a root container include Load Container, Constraint Container, and Simulation Object Container.
Folder Manager Displays a hierarchical listing of existing folders. To create a new folder, right-click any level of the hierarchy and choose New Folder.
Fluid Domain Region
Group Reference Lets you apply the fluid domain region to a group.For more information, see Group Reference options.
Select Object Lets you select the polygon body or bodies to define the region in which you want to generate the fluid mesh.Excluded lets you remove individual entities from within your selection.
Stacked Smart Selector Methods Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Inner Region to Mesh Through
Select Object Lets you select the polygon body or bodies within the selected fluid domain region that should be ignored by the meshing algorithm.Excluded lets you remove individual entities from within your selection.
Stacked Smart Selector Methods Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Material
Type Controls the type of fluid of fluid to be used.Pure Substance models any fluid other than a gas mixture.Mixture models gas mixtures composed of ideal gases.
Mixture Lets you select a Mixture modeling object or click Open Manager to create a new one.
Fluid Material Appears when you set Type to Pure Substance.Lets you select a defined fluid material for the fluid domain or define a new material.Air defines the generated fluid mesh as having standard material properties for air.Water defines the generated fluid mesh as having standard material properties for water.Specify defines the generated fluid mesh as having material properties you specify.
Select Fluid Appears only when you set Fluid Material to Specify.Specifies the material to assign to the elements in the fluid mesh. Select a previously created material from the list, or click Choose material to create a new material.
Mesh Density
Element Size Type Controls the method you use to specify the size of the elements in the fluid mesh. Relative defines the element size as a fraction of the longest edge of the bounding box of the selected geometry. Absolute lets you specify the element length.
Element Size Lets you specify the size of the elements.
How do I

Create a Fluid Domain mesh

Learn more

Fluid Domain

Creating geometry for Fluid Domain meshing

Modeling obstructions in the Fluid Domain

Defining a boundary layer mesh using a Fluid Domain

Look up more details

Fluid Domain dialog box – Fluid Surface Mesh options

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal

Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal boundary conditions

Fluid Domain dialog box – Fluid Mesh options, Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });

Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/id631771 · retrieved 2026-07-17