Create a Flow Boundary Condition

1. Choose Home tab→Loads and Conditions group→Flow Boundary Condition .

2. In the Flow Boundary Condition dialog box, from the Type list, select a boundary condition type.Different options appear in the dialog box depending on the type you select. See Flow Boundary Condition types for more information.

3. Select the entities that delimit the area through which the fluid moves. For a Recirculation Loop only, you must select two polygon faces (or sets of polygon faces) to define two openings: Extract and Return.

4. Select a Mode for the value definition. Different options appear in the dialog box depending on the Mode you select. Opening, Convective Outflow, and Static Pressure boundary condition types do not have Mode options.

5. Type a magnitude to define the flow. Opening, Convective Outflow, and Static Pressure boundary condition types do not have a magnitude. For an Internal Fan only, you must also specify the flow direction.

6. (Optional) Define all other options required such as Heat Generated at Inlet, Tracer Fluid, Mixture, Flow Direction, Fan Control, Distribution.

7. Click OK.

Learn more

Flow Boundary Condition types

Modeling fan swirl

Working with fan curves

Modeling heat loss or gain in a recirculation loop

Flow boundary condition modeling

External Conditions

Fan Speed Controller

Inputs to expressions

Look up more details

Auto-generated expressions

Quick links

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

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

Command reference

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Create a Flow Boundary Condition, Simcenter 3D 2021.1 Series

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