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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

December 9, 2024 at 1:46 pm
Paul Hutcheson
Ansys Employee

The remote displacement on the ball should have UX,UY,UZ,RX,RY=0 and only RZ free.

-> It is very easy for me to lose track of the setup you have supporting you in this way. Please make sure you are solving both CFD and Mechanical in a rotating reference frame, and adjust all boundary conditions at walls accordingly.

To calculate the ball torque, firstly create a cylindrical coordinate system in Fluent, then calculate the moment about z axis. This is the torque.

In Mechanical you can calculate the rotational z displacement once you have a cylindrical coordinate system in Mechanical.

Paul

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