Avoiding pyramid elements in ICEM

[nkul...@ncsu.edu]

Hello,

I am trying to create with only tetra (for the bulk) and prism (for BL) elements using ICEM. Is there a way to ensure there are no pyramids formed? I have a slightly complex geometry (image attached below) and I can't use extrusion to create the prisms. 

I have tried making the mesh fine without the element count going very high but it still creates around 400 pyramids for a 1 million element mesh.

I haven't yet tried it but would Trelis be better at creating such a mesh?

Thanks in advance

Nilay Kulkarni

[X A (Mike Lin)]

ICEM convert all elements to tetra?

[X A (Mike Lin)]

Create a single layer of prism, which can largely avoid pyramid elements. Then split the prism into multiple layers, which will work.

I fixed it and then converted the mesh by exo2nek, but got the problem of:

============================

 mesh metrics:
 GLL grid spacing min/max    : 6.90E-03 2.04E+00
 scaled Jacobian  min/max/avg: 7.41E-02 5.46E-01 1.56E-01
 aspect ratio     min/max/avg: 1.96E+00 1.11E+02 8.53E+00

  Mixed B.C. on a side nonaligned with either the X,Y, or Z axis detected for
  Element        9286    side           2
  Requires STRESS FORMULATION
  Mixed B.C. on a side nonaligned with either the X,Y, or Z axis detected for
  Element        9287    side           2
  Requires STRESS FORMULATION
  Mixed B.C. on a side nonaligned with either the X,Y, or Z axis detected for
  Element        9288    side           2
  Requires STRESS FORMULATION

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[X A (Mike Lin)]

Solved by "Repair Geometry" in ICEM