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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › A rigid body being moved by water within a dynamic mesh. › Reply To: A rigid body being moved by water within a dynamic mesh.

July 14, 2023 at 4:58 am
Alassedi
Subscriber

 

I think that from the point of view of CFD, when water enters from the left side, it will cause vibrations in tiny parts of second to the piston in the horizontal direction. Therefore, CFD calculations should capture these small vibrations. This leads to instability unless the time step is reduced to 1.0E-06 sec. Does ANSYS Fluent software provide another option to address this issue?