Specifying Face Names

The final step in preparing the model geometry is to specify the inlet, outlet, and interfaces (baffle and fluid) of the model by setting face names.

When the 3D-CAD model is imported into the simulation via geometry parts, faces that have specified names are defined as separate part surfaces. Then, when the geometry is assigned to a region, you can choose to automatically distinguish these surfaces as distinct boundaries.

Name the faces for the inlet and outlet:

  1. Rotate the model so that the inlet duct is visible.
  2. Right-click the rectangular inlet face and select Rename.


  3. In the Rename dialog, enter Inlet and click OK.
  4. Right-click the circular face at the top of the outlet pipe and select Rename.


  5. In the Rename dialog, enter Outlet and click OK.
When naming faces for an interface, you must successively identify the faces on each side of an interface. This procedure generally requires you to hide whole bodies so that the interfacing surfaces are exposed.

To name the faces for the interface:

  1. Under Body Groups, right-click the Main Body node and select Hide.
  2. Right-click the bottom face of the outlet pipe and select Rename.


  3. In the Rename dialog, enter Fluid_Int_Outlet and click OK.
  4. Right-click on the curved surface of the baffle and select Rename.


  5. In the Rename dialog, enter Baffle_Int_Outlet and click OK.
  6. Under Body Groups, right-click the Main Body node and select Show.
  7. Right-click the Outlet Pipe node and select Hide.
  8. Click (Make Scene Transparent).
  9. Right-click the bottom face of the outlet pipe inside the main body and select Rename.


  10. In the Rename dialog, enter Fluid_Int_Main and click OK.
  11. Right-click the curved surface of the baffle inside the main body and select Rename.


  12. In the Rename dialog, enter Baffle_Int_Main and click OK.
  13. Right-click in the 3D-CAD View scene and select Restore > Hidden Bodies.
The geometry is now complete and you can exit 3D-CAD.
  1. At the bottom of the object tree, click Close 3D-CAD.


  2. Save the simulation.