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Old   January 10, 2012, 12:49
Default How to generate this mesh?
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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!

multiBlocks.png
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Old   January 10, 2012, 16:10
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www.gridpro.com/support/355
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Old   January 10, 2012, 16:12
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Quote:
Originally Posted by JBeilke View Post
Thanks, But I mean the mesh would be discontinuous between adjacent blocks. I dont think gridPro can do than.
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Old   January 10, 2012, 16:24
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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.
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Old   January 10, 2012, 16:34
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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.
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Old   January 10, 2012, 16:47
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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.
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Old   January 10, 2012, 16:49
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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....
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Old   January 10, 2012, 18:50
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Quote:
Originally Posted by lakeat View Post
PS1: I thought the term "internal surface" is the invention of GridPro. I didn't notice that Star ccm uses it too.
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.

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PS2: prostar is not free....
Nothing is for free. Not even the death, because it costs your life ;-)
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Old   January 11, 2012, 11:38
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And do you have a solution to my another post.
unrealistic velocity field

Thank you very much.
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Old   January 11, 2012, 14:15
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It's there.
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