Using Moving Wall Boundary Condition in Ansys Fluent

When can I use a Moving Wall boundary condition in Ansys Fluent?

If you want to include tangential motion of the wall in your calculation, you can use the Moving Wall boundary condition to define the wall translational or rotational velocity, or the velocity components.

This can be done by selecting the Moving Wall option under Wall Motion.

Note that you cannot use the Moving Wall condition to model problems where the wall motion with respect to the adjacent cell zone has a component that is normal to the wall itself.

For such problems, consider using a Sliding or Dynamic Mesh. Ansys Fluent will neglect any normal component of wall motion that you specify for the Moving Wall condition.