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Ansys Learning Forum Forums Discuss Simulation Fluids How to set a motion in a specified reference frame Reply To: How to set a motion in a specified reference frame

Rob
Forum Moderator

If you're not remeshing you can also look at Mesh Motion in the Cell Zone. That's generally sufficient for rotating or translating (linear) movement. The UDFs become more useful for complex motion or where something influences the motion (eg 6DOF). 

However, the next questions are what and why! 

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