Search found 4 matches

by DCortellessa
Wed Mar 15, 2023 12:29 pm
Forum: Mesh
Topic: Anisotropic unstructured mesh and 3D boundary layer
Replies: 6
Views: 3987

Re: Anisotropic unstructured mesh and 3D boundary layer

I have a follow-up question. I've understood that, in order to properly generate a boundary layer, I have to select a sufficiently small first layer thickness. However, at the moment I'm struggling to avoid a large jump between the end of the boundary layer and the interior mesh: Screenshot 2023-03-...
by DCortellessa
Fri Mar 10, 2023 12:42 pm
Forum: Mesh
Topic: Anisotropic unstructured mesh and 3D boundary layer
Replies: 6
Views: 3987

Re: Anisotropic unstructured mesh and 3D boundary layer

Got it, thanks! So in order to obtain a proper boundary layer from the 3D boundary layer function I need to select a much lower first element thickness. Also, by modifying some geometrical entities, I was able to divide the volume in 3 prismatic volumes, thus allowing for a semi-structured mesh that...
by DCortellessa
Thu Mar 09, 2023 6:24 pm
Forum: Mesh
Topic: Anisotropic unstructured mesh and 3D boundary layer
Replies: 6
Views: 3987

Re: Anisotropic unstructured mesh and 3D boundary layer

Sure, here is the project! SBendProject.gid.zip For the boundary layer, by setting the sizes to be much lower then what I thought it would be necessary, it performed better. For example, this surface has an unstructured mesh of size 2 (the volume mesh even larger), I selected 5 boundary layer elemen...
by DCortellessa
Thu Mar 09, 2023 3:37 pm
Forum: Mesh
Topic: Anisotropic unstructured mesh and 3D boundary layer
Replies: 6
Views: 3987

Anisotropic unstructured mesh and 3D boundary layer

Hello, I have the CAD of an S-Bend. What I would like to do is to generate an unstructured mesh of tetrahedra, stretched in the direction of the flow. To my understanding, GiD only allows to set a size for unstructured volume meshes. Therefore my question is: am I missing some option that would allo...