periodic fully developed flow in pipe
I am trying to do a very basic simulation. It is to obtain fully developed flow in a pipe of constant cross section.I want to biuld the mesh so that there are periodic bcs. This way I don't need to biuld a very long pipe.
How do I build such a mesh? I have tried linking the in and out and then meshing. However, the resulting mesh is only on the faces and the pipe wall, not in the volume even though I requested a volume mesh. Can anyone help with this very simple dilema? Thanks |
Re: periodic fully developed flow in pipe
well, periodic, I assume that you are doing a 3D problem, if you request a volume mesh in gambit, then you should either get a volume mesh or an error tell you why a mesh has not been generated in the bottom part of the screen. What is the error you are recieving?
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Re: periodic fully developed flow in pipe
Yes. 3D pipe. When I have not mesh on a face and request a volume mesh the error is: Face.1 could not be converted to a submappable region.
When I first mesh a face and then request a mesh of the volume I get the same error. I'm not sure what I'm doing wrong. I just want to have a 3D pipe with periodic bcs so I can obtain fd flow profile. |
Re: periodic fully developed flow in pipe
is there any hole in face 1. are number of nodes equal on opposite sides?
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Re: periodic fully developed flow in pipe
There does not appear to be any hole in the face. The number of nodes are the same on both faces.
To create the geometry I simply chose to create a volume on a predefined primative, choosing cylinder. Then I go to mesh and choose to mesh the first end face. Then go to mesh the volume choosing the volume and the meshed end face as the source. I get the same error. What am I doing wrong? |
Re: periodic fully developed flow in pipe
My preferred way to mesh any cylindrical area to get a good mesh but may not work for this problem:
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