I am analyzing a general automotive body, I am using a hybrid grid, but my question is what kind of grid is preferable for the near wake, a structured or unstructured grid. The biggest advantage of a structured (alignment with the flow, and avoiding numerical diffusion) is not valid anymore in the near wake. To turn down my cell count it would be best to use an unstructured grid in my opinion.
Or are there other advantages for a structured and disadvantages for a unstructured grid in the near wake? Who can help me, thanks in advance...
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