[philm]

Hello,

Can anyone help me to find some sort of tutorial of how I can create a mesh with GMSH and convert it to openFoam?

I designed my model in solidworks and I then exported it to stl for importing it into the gmsh program.

I am following this tutorial on 2D meshing: https://openfoamwiki.net/index.php/2...ial_using_GMSH

but I was unable to generate a good result (basically, openfoam failed and says that there is no Mesh!)

I was wondering if anyone had any experience with creating a 3D mesh from an stl file and importing the mesh to OpenFoam?

[alexeym]

Hi,

If you have STL of surface and would like to create volume mesh, in general, you should use snappyHexMesh or foamyHexMesh.

If you REALLY want to use Gmsh, use search - https://duckduckgo.com/?q=Gmsh+remesh+STL

[philm]

So it sounds like using gmsh to mesh an stl and convert gmsh mesh to openfoam is a little complicated.

I atak you that you recommend some of the built in functionality OpenFoam to convert stl to openFoam mesh?

interestingly, I have not heard of either of those utilities, thank you for recommending them to me, I will take a look.

Personally, it doesn't matter which one I use as long as I can import the mesh to openFoam without any issue

[alexeym]

It is not VERY complicated. Yet Gmsh in general is good at generating tetrahedral meshes, while OpenFOAM prefers hexahedral.

Personally, it does not matter to me, which tool you will use. Gmsh? OK. Use Gmsh, generate tetrahedral mesh, use corresponding fvSchemes and non-orthogonal correction. (snappy|foamy)HexMesh? OK. Generate background mesh, play with settings, use fvSchemes and non-orthogonal correction suitable for generated mesh. cfMesh? Pointwise? Whatever works.

[Bharath Bhushan]

hi guys,,

I am unaware that, is it possible to do 3D structured mesh without using the extrude option in gmsh ?. Because I need to do 3D structured mesh on the nozzle by importing the geometry. I cant touch the geometry parameters, so cant use extrude option.



thank you