Defines the method of entering the tangential velocity.

None

There is no movement at the boundary. No nodes are added to the Physics Values node.

Vector

The tangential velocity will be specified with a vector. A Velocity node is added to the Physics Values node.

Rotation Rate

Tangential velocity is specified as a rotation rate about the region's Reference Frame. A Wall Rotation node is added to the Physics Values node.

Local Rotation Rate

Tangential velocity is specified as a rotation rate about a local Reference Frame. A Wall Rotation node and a Reference Frame node are added to the Physics Values node.

Tangential wall motion may be specified relative to the mesh or in the absolute frame.

Relative to Mesh

The velocity is relative to the mesh.

Absolute

The velocity is absolute.