Ansys Learning Forum Forums Discuss Simulation Fluids Dynamic mesh-nan in cg definition Reply To: Dynamic mesh-nan in cg definition

Federico
Ansys Employee

Yes and no, depending on what your ymotion UDF does, time step size can bring in other issues as well.

As per my previous comment, do a mesh check prior to doing a Preview of Mesh Motion. Otherwise, you may share your UDF code here to give us more information.