Rotating wall boundary condition

Could i please get some advice on rotating walls as a boundary conditions am struggle to make it work. Thanks

Hello fsinclair,

can you please share a link to your project and describe the issue a bit further?

Also, you can have a look at this page which describes the set up of a rotating wall boundary condition.

Best regards

so i am moddeling a hydro electric turbine and need the blades to have a wall boundry conditions but a rotating one as they are moving

since you already apply a rotating zone to the blades,
an extra boundary condition is not necessary.
This is also the right approach for the turbine. You would only use a rotating wall, for something like a tire or a ball.

You can find out more about the rotating zones here:

Best regards

ah perfect thank you very