In this step, we define the inlet boundary as an ambient opening. We'll do this by applying two conditions--an ambient pressure and an ambient temperature.
1. Click Boundary Conditions from the Setup tab:
2. Make sure all parts are visible by middle clicking anywhere off the model.
3. Left click the inlet surface.
4. Click Edit from the Boundary Conditions context panel:
5. On the Type row, select Pressure.
6. Leave the Unit as Pa and the Pressure value = 0.
8. To select the supply surface again, click Setup (tab) > Selection (panel) > Select Previous.
9. Click Edit from the Boundary Conditions context panel:
10. On the Type row, select Temperature.
11. Verify the Units are Celsius. On the Temperature row, enter 25.
13. To verify that the two boundary conditions are properly assigned to the inlet, check the Design Study Bar and the colored stripes on the inlet surface: