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Ansys Learning Forum Forums Installation and Licensing Ansys Products Tutorial or Help for 2 way FSI Reply To: Tutorial or Help for 2 way FSI

Paul Hutcheson
Ansys Employee

Yes for Mechanical, no for Fluent.

You have to understand principles such as rotating reference frames and how they are applied to the solvers in order to complete this project. I can't go through every detail in this forum I'm afraid.

A moving wall in Fluent doesn't mean a moving reference frame. A moving reference frame means you solve the fluid equations in rotating reference frame following the IR (i.e. rotating at the same speed). This is set under frame motion in Fluent.

If you use frame motion, then it will be OK to change the IR wall speed back to stationary (relative to adjacent cell zone - which will now be rotating with IR). Sorry for changing this again, but it is not always clear the setup you currently have and supporting it via this forum chat alone is not easy. I think we're getting there.

If you don't have the ball wall in Fluent then the ball will receive no fluid forces and will not rotate. I don't understand why you don't have the ball included in the fluid? I think you need to share your full boundary conditions on fluid side please.

Paul