Defining a Periodic Interface

You can define a periodic interface to simulate fluid flow and thermal changes that vary according to a translational or rotational period.

See Also
About Periodic Interfaces
In Other Guides
Editing Simulation Features
  1. From the Contacts section of the action bar, click Periodic Interface .
  2. Optional: Enter a descriptive Name.
  3. Select the Upstream surface and Downstream surface that represent the two sides of the interface.

    Tip: Click to change the side of the surface you select.

  4. From the Contact search parameters, specify the distance-based tolerance for contact by selecting one of the following choices from the Tolerance Type options:
    OptionDescription
    Absolute Specify tolerance as an absolute distance, then enter the distance in the Normal Tolerance field.
    Relative Specify tolerance relative to the typical mesh element size, then enter the relative size as a decimal in the Normal Tolerance field.
  5. From the Contact search parameters, specify the default Angle Tolerance for contact.
  6. Select a type of periodic interface and complete the definition as specified in the following:
    OptionDescription
    Translate Defines a translational pressure jump between the two surfaces.
    Rotate Defines a periodic interface with a rotational period.
  7. For rotational periodic interfaces, select the axis system and the axis about which the periodic interface rotates.
    OptionDescription
    Global Aligns the local feature triad with the global coordinate system.
    Local Aligns the local feature triad with a selected axis system in the model.
    Specify Allows you to orient the local feature triad directly. Right-click the feature triad glyph on the model to orient the local feature triad.
  8. Click OK.