Imported Geometry, meshing problem

B_banzia
B_banzia Altair Community Member
edited October 2020 in Community Q&A

ERROR 2331: Two triangular surface patches overlap

 

I am getting this error, but then when I go back a check for intersecting triangles.  It is telling me that none are present in the model.

 

I also checked the .out file.  It has the errors listed but no further info.

 

Everything in the model is unioned.

 

Part of the model is imported geometry.  How do I fix this.  When I run without the imported geometry included, it runs fine.

 

 

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Answers

  • Mel
    Mel Altair Community Member
    edited October 2019

    There was an issue with previous versions where a certain number of parallel processes did not report the triangle numbers to the out file.

    Please try a different number of parallel processes or just run the model with 1 process only. Then check the out file again if it reports the triangle numbers and find/view them in POSTFEKO.

  • B_banzia
    B_banzia Altair Community Member
    edited October 2019

    Oh Thanks!  When running just one core it put the overlapping triangles in the .out file.

     

    So why cant I find these with the 'find overlapping geometry' search in Cadfeko?

    So I can find these in PostFeko, but cannot edit/delete them.  Short of a more coarse mesh, what is the normal work flow to deal with this?

     

     

  • Mel
    Mel Altair Community Member
    edited October 2019

    The workflow is not ideal. Let me not rather use that dreaded term:'...in the next version...'

     

    The solver runs a more in depth check of the whole mesh while Cadfeko does a very quick check and often misses these triangles.

    The workflow is to find the triangle numbers in the postprocessor (POSTFEKO) and go back to the preprocessor (CADFEKO) to find and fix them.

     

    Often the poor mesh is caused by poor CAD. Fixing the CAD is first prize, else you will need to fix the mesh.

    This video and this video should help.

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