Computational Grids
Complex Geometries and Fields
CAD Creation - Parametric Design

Sliding Interfaces

Sliding interfaces allow for better solution interpolation across a sliding interface. This feature only allows the mesh size to vary in only one direction. This enables the creation of sliding interfaces, either rotational or linear, with a consistent size profile on each side of the interface. For rotational interfaces, this means the size only varies in the radial direction. Sliding Interfaces are most commonly used to model a rotational sliding interface such as those present in the following geometries:

  • Multistage Rotor / Stator Simulations
  • Helicopter Rotors
  • Wind Turbines


The pictures below show a picture of the rotor (yellow) / stator (green) interface for a case with rotational periodicity. A small source has been placed on the shroud surface of the rotor causing both surface clustering and also a thinner boundary layer mesh.

Without the sliding interface feature, this clustering is localized to the region of the source.

Turning the sliding interface feature on, the clustering is spread over the entire circumference of both the rotor and the stator on the interface. Similarly, the reduced thickness of the prisms has also spread over the entire interface.