Fluids

Fluids

Unstructured ICEM Prism ERROR

    • CMHR
      Subscriber

      Hi,

      I tried to mesh a 3D wing on ICEM using an unstructured approach. However, every time I check for "create prism layers" under the volume mesh tab, I receive an error, as stated below. This error appears right after the mesh is generated but has no inflation layer yet.

      <

      running on Windows (64 bit version)

      (c) Copyright 1991 - 2021 ANSYS Inc.

      reading surface model...

      reading mesh file...

      failed to allocated 12252 megabytes

      to store 72995899 tets of 176 bytes each

      could not allocated -37623664 bytes for 72995899 tetras

      Application is finished.

      Error: prism terminated prematurely>>

      Can you please explain why this occurs? I understand that it's a memory issue, but I can not reduce the cell sizes on my wing, or else the mesh does not follow my geometry.

      Thank you very much.

    • Keyur Kanade
      Ansys Employee
      Yes, it looks like memory issue. Can you please create coarse mesh or reduce problem size by using some symmetry etc.
      Regards Keyur
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    • CMHR
      Subscriber
      Hi, Thank you for your reply.
      It worked out in the end. I just refined on some areas and made everywhere else coarse. Just a follow-up, what do you mean by, "reduce problem size by using some symmetry"?
      Thank you.
    • Keyur Kanade
      Ansys Employee
      If your geometry /flow has symmetry then you can only use that portion instead of full geometry.
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