CFD Online Discussion Forums - Mesh in Boundary Layer

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ryan	November 15, 2005 12:19

Mesh in Boundary Layer

Hi, Can someone explain to me why we always go for hexa mesh to resolve the boundary layer? Why dont we go for tetra?

Alan	November 15, 2005 18:54

Re: Mesh in Boundary Layer

Think about best practices!

Vijaykumar Sathyamurthi

November 17, 2005 14:21

Re: Mesh in Boundary Layer

Hi Ryan,

A tetrahedral mesh is to be avoided if possible while meshing as it creates grids that are not aligned with the flow field. This results in enhanced numerical/false diffusion and thus gives incorrect answers. Regards, Vijay.

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