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Old   October 21, 2008, 08:33
Default Dynamic Mesh Puzzle
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I am trying to simply rotate a square using the dynamic mesh feature of FLUENT. However, the mesh near the surface of the rotating square becomes scewed and negative volumes result. I have reduced the time step and am able to rotate ~50 steps (10 degrees) before the error.

The mesh is non-uniform (small near the rotating square and large near the boundary) and three dimensional. I am able to solve the problem in two dimensions with no problem.

Does anyone have any suggestions?
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Old   October 21, 2008, 08:47
Default Re: Dynamic Mesh Puzzle
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Use size function, and change the remeshing/smoothing parameter values, set the spring constant factor as 0.
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