Hex vs Prism mesh for farfield

Cases
1

Hi,

according to your experiences, do you have any recommendations for far-fields elements? Is it better to have prisms or hexahedral?
What about:

  • solution accuracy
  • runtime for the same DoFs
  • mesh partitions & load balancing (e.g. with prisms in the farfield a mixed element grid is needed, any issues or problems or improvements to that?)

Regards

2

For the far-field the ideal element type is hexahedra. They are the most efficient on a per-DOF basis. However, as it can sometimes be difficult to generate meshes with hexahedral far-fields it is not uncommon to see prisms being used.

Regards, Freddie.

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