Creating an Internal Fan

You can specify that a part in your assembly is a three-dimensional fan and describe its inlet and outlet locations, pressure drop, and swirl velocity.

Before you begin:
  • Add a fan-shaped 3D part to your assembly.
  • For fluid sections simulations: create one independent fluid section for the 3D part that you plan to use for the internal fan. Make sure that this fluid section has the same fluid material used in the other fluid sections.
  • For multispecies simulations: include the 3D part in the multispecies section for the simulation.
See Also
About Internal Fans
  1. From the Fans section of the action bar, click Internal Fan .
  2. Optional: Enter a descriptive Name.
  3. Select the Fan part, which is the 3D part that you want to define as an internal fan.
  4. Select the Inlet boundary, which is the surface of the fan part where the flow enters the 3D fan.
  5. Select the Outlet boundary, which is the surface of the fan part where the flow leaves the 3D fan.
  6. To define a constant pressure jump across the fan interface:
    1. From the Pressure jump options, select Constant.
    2. Specify the pressure change across the fan in the Pressure jump field.
  7. To define a pressure jump that varies according to the volume flow rate:
    1. From the Pressure jump options, select Fan curve.
    2. Specify pairs of Volume flow rate and Pressure jump values in the table that appears.
  8. Optional: Simulate swirl velocity downstream from the fan:
    1. Select Enable swirl velocity.
    2. Specify a custom Hub radius for the fan.
    3. In the data table that appears, describe the swirl by entering the tangential and radial velocity data as a function of the radius.
  9. Click OK.