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Shared surface between bodies for better meshing?

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Old   August 16, 2011, 03:44
Default Shared surface between bodies for better meshing?
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Alexander
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Hi!

I am doing a model of a wind tunnel consisting of several different frozen bodies (since I want different types of mesh at different sections of the tunnel). The bodies lies exactly next to eachother but there are two surfaces between them, one for each body. I suspect I will run into problems in the meshing if the meshing at the boundaries between the bodies doesn't match so I would like to have a shared surface between two adjacent bodies. How do I make a surface shared? (And please tell me if I'm totally wrong about the mesh-matching)

Thanks!
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Old   August 16, 2011, 05:39
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which software are you using?
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Old   August 16, 2011, 06:06
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Right, forgot that. I'm using ansys CFX and doing the geometry in ansys DM.
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Old   August 17, 2011, 14:59
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You have two choices...

You can have each zone meshed independently and let the solver sort it out... or you can have each zone mesh conformally (matching mesh).

If you have separate parts, it will mesh each independently.

If you want matching mesh, you must create a multibody part and drag and drop all the other parts into it.

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Old   August 17, 2011, 18:04
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Quote:
Originally Posted by PSYMN View Post
You have two choices...

You can have each zone meshed independently and let the solver sort it out... or you can have each zone mesh conformally (matching mesh).

If you have separate parts, it will mesh each independently.

If you want matching mesh, you must create a multibody part and drag and drop all the other parts into it.

Simon
Okay, thanks. If I do a multibody part, can I still vary between a hexahedral and tetrahedral mesh at the different parts of the body or do I have to have the same mesh-type all over the multipart body?
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Old   August 18, 2011, 11:52
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Quote:
Originally Posted by alxe View Post
Okay, thanks. If I do a multibody part, can I still vary between a hexahedral and tetrahedral mesh at the different parts of the body or do I have to have the same mesh-type all over the multipart body?
Hi alxe,
You can have different mesh types on a multibody (conformal) mesh. All you need to do is create a different meshing method for each of your bodies (RMB on Mesh > Insert > Method) and them select the mesh method you want.

Cheers
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