The Rotating Machinery, Turbulent Flow, v2-f (spf) interface (
), found under the
Single-Phase Flow>Rotating Machinery branch (
) when adding a physics interface, is used to simulate flow at high Reynolds numbers in geometries with one or more rotating parts. The physics interface supports incompressible, weakly compressible, weakly compressible and compressible flows at low Mach numbers (typically less than 0.3). The physics interface is available for 3D and 2D components.
There are two study types available for this physics interface. Using the Time Dependent with Initialization study type, the rotation is achieved through moving mesh functionality, also known as sliding mesh. Using the
Frozen Rotor with Initialization study type, the rotating parts are kept frozen in position, and the rotation is accounted for by the inclusion of centrifugal and Coriolis forces. See
Theory for the Rotating Machinery Interfaces in the
CFD Module User’s Guide. In both study types initialization is performed by first solving for the distance to the closest wall.
When this physics interface is added, the following physics nodes are also added in the Model Builder under
Turbulent Flow, v2-f —
Fluid Properties,
Wall and
Initial Values. A
Moving Mesh interface with a
Rotating Domain node is added automatically in the
Model Builder under the
Definitions node. Then, from the
Physics toolbar, add other nodes that implement, for example, boundary conditions and volume forces. You can also right-click
Turbulent Flow, v2-f to select physics features from the context menu. For information about the available physics features, see
Domain, Boundary, Point, and Pair Nodes for the Rotating Machinery Interfaces.