Dynamic mesh -- CFD Online Discussion Forums

June 1, 2017, 07:40

Dynamic mesh

D.M

Member

Davoud Malekian

Join Date: Jan 2016

Posts: 53

Rep Power: 10

hey guys,
i have simple square geometry with inlet, outlet and top_wall and bot_wall.
i want to simply move the the top_wall and as you can see in the picture, i have already done that by a DEFINE_GRID_MOTION udf.

the problem is that the meshes on the boundary (outlet) doesn't move and the mesh skewness near that boundary becomes so high which is not good. do you know how can i fix this? should i write another udf for remeshing the boundary (outlet) in every time step?

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dynamic mesh, grid motion

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