Reply To: Tutorial or Help for 2 way FSI

[Paul Hutcheson]

Hi Ashish,

It is a complex problem to handle in this way, I can only give piecemeal advice. Ideally things need to be tested.

If OR is fixed, the ball is rotating, CFD domain must be periodic but solved in absolute frame.

If IR is rotating, this is just a wall in CFD domain so a wall velocity can be applied to CFD on IR wall. Easy.

But it is therefore wrong to move the IR in Mechanical, because the meshes will no longer overlap.

This is why I prefer rotational velocity for the IR, since it doesn't move the FEA mesh.

Paul