Reply To: Solid Body Motion (Fluent Conjugate Heat Transfer Modeling)

[Federico]

You should consider using a Dynamic Mesh 12.6. Using Dynamic Meshes (ansys.com).

Here's an example: ANSYS Fluent: Dynamic Mesh Problem for a Piston and Reed Valve - Part I - YouTube (you may not need the 6DOF model)

You can prescribe the solid/fluid1 motions using a profile.