SimcenterKnowledge

Command reference help topics > Duct Flow Boundary Conditions dialog box (Thermal/Flow/SST/ESC/Multiphysics)

Duct Flow Boundary Conditions dialog box – One-Sided Total Temperature Effects

Option Description
Name Sets the name for the duct flow boundary condition. The name appears in the Simulation Navigator and the graphics window.
Description Specifies a description of the duct flow boundary condition.
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.
Convecting Region
Group Reference Applies the boundary condition to the selected group. For more information, see Group Reference options.
Select Object Lets you select the faces, edges, or elements to define the convecting region.Excluded lets you remove individual entities from within your selected object. The software does not apply the simulation object to the excluded elements.Note: The Element Selection Filtering options are available when the Type Filter list on the Top Border bar is set to Elements.
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.
Fluid Ducts
Group Reference Applies the fluid ducts to the selected group.
Select Object Lets you select polygon edges or elements to define fluid ducts.
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.
Total Temperature
Rotational Effects Specifies how to account for total temperature effects in convective heat transfer due to rotating parts.Neglect Wall RotationUse this option when the components that surround the fluid are stationary or when the components are rotating at low speeds, for example in heat transfer to a stator. The fluid temperature that you specify in other duct flow boundary conditions is assumed to be the absolute total temperature, Tt,abs.Correct for Wall RotationUse this option when the components that surround the fluid are rotating. The fluid temperature that you specify in other duct flow boundary conditions is assumed to be the absolute total temperature.Relative Temperature Reference FrameUse this option when components that surround the fluid are rotating. The fluid temperature that you specify in other duct flow boundary conditions is assumed to be the relative total temperature, Tt,rel.
Swirl Input Type Specifies how the swirl of the fluid is defined. The thermal solver uses the specified value to relate total temperatures and relative temperatures.Swirl VelocityDefines the swirl velocity, vΦ. Specify the value in the Swirl Velocity box. Swirl RatioDefines the swirl ratio, ωfluid/ωrotor. Specify the value in the Swirl Ratio box. Relative Temperature DifferenceDefines the relative temperature difference, ΔTrel. Specify the value in the Relative Temperature Difference box. For more information, see Additional magnitude options.
Learn more

Duct Flow Boundary Conditions

Look up more details

Duct Flow Boundary Conditions dialog box– Duct to 3D Flow Connection options

Duct Flow Boundary Conditions dialog box– Duct Fan/Pump options

Duct Flow Boundary Conditions dialog box– Duct Opening options

Duct Flow Boundary Conditions dialog box– Duct Total Pressure options

Duct Flow Boundary Conditions dialog box– Duct Flow Properties options

Duct Flow Boundary Conditions dialog box– Two-Sided Total Temperature Effects

Duct Flow Boundary Conditions dialog box– Duct Label options

Total temperature effects

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

Duct Flow Boundary Conditions dialog box – One-Sided Total Temperature Effects, 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/xid620058 · retrieved 2026-07-17