How to generate this mesh?
 

I saw a multiblock mesh which can save the total grid number a lot as seen in the attached picture, does anyone know how to generate these kind of mesh?

I know blockMesh can merge patches, but I think it is too complicated to handle this.

Any help would be highly appreciated!

Attachment 10780

Thanks, But I mean the mesh would be discontinuous between adjacent blocks. I dont think gridPro can do than.

Why do you want hanging nodes when you can get a better mesh without it? The trick is to use a smart topology like a compact enrichment.

The local refinement can be done later with ProStar or one of the OpenFoam meshing tools, but it is not a sign of good meshing to do it this way.

Hmm, so I guess you know how to convert the mesh with internal faces to OF format? Can you share with me the converter? I'd really appreciate it.

I would do the refinement in Prostar and export the mesh to OF either in star4 or ccm format. There are converters for both formats in OF.

But as I wrote before I would not use a local refinement for this geometry.

Sorry, my bad, I mean gridPro. You have the converter?

PS1: I thought the term "internal surface" is the invention of GridPro. I didn't notice that Star ccm uses it too.

PS2: prostar us not free....

The internal surface mentioned in the tutorial is just there to guide the elliptic smoother in gridpro. The resulting mesh is a pure hex mesh with 1 by 1 connectivity. There are also converers for GridPro to OF.

Nothing is for free. Not even the death, because it costs your life ;-)

And do you have a solution to my another post.
http://www.cfd-online.com/Forums/ope...ity-field.html

Thank you very much.

It's there.