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March 22, 2003, 06:59 |
Gambit mesh of tangential tube/tube
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#1 |
Guest
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I have a big tube and a little tube. The little tube is a tangent on the big tube. When I mesh the tangential part, Gambit tells me that the operation has failed.
It properly has something to do with the cells in the tangent point. I think they get too small and too skew (Gambit suggests this). Do you agree? Do you have any suggestions how to mesh a tangential like that? Cheers |
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March 22, 2003, 12:56 |
Re: Gambit mesh of tangential tube/tube
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#2 |
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Christian,
I had the same problem. I was trying to mesh 2 tubes and I split the at the intersection. When I tried to mesh gambit didn't let me because of the highly skewed elements. What I did was to unite the volumes and then split them along the longitudinal axes of the tubes. With these gambit didn't have to make elements bounded by 2 colliding surfaces because thre was no surface at the intersection (just empty space). Then I meshed the volume wit tet elements. I hope I made myself clear. |
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March 25, 2003, 07:06 |
Re: Gambit mesh of tangential tube/tube
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#3 |
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Hi vyrro
I am not quite clear on your split along the longitudinal axis of the tubes. Does it mean that you cut the tube in half making 2 half-circular volumes pr. tube? (was that clear If I unite the 2 tubes, I can mesh the volumen. But I cannot mesh it with hex as I would like to (I find that hex are more stable numerically and requires less cells). Maybe the only way to make hex cells are to make an non-conform mesh intersection? Cheers. |
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March 26, 2003, 01:04 |
Re: Gambit mesh of tangential tube/tube
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#4 |
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hi,
U cann't mesh this type of geometry with hex So u have think about the alternatives as the surfaces r not co-linear. Thanks/Alamgir |
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March 26, 2003, 15:59 |
Re: Gambit mesh of tangential tube/tube
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#5 |
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Hi
you can made a hybrid mesh the main pipe hexahedral the colateral one tetrahedral. In that way you eliminate your problem and oaso the split suguestion that personally I don't like. Regards Alex Munoz |
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March 27, 2003, 04:34 |
Re: Gambit mesh of tangential tube/tube
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#6 |
Guest
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Hi Alex.
I am not sure I know what you mean. Do you mean that I should mesh the main pipe with hex and the side pipe with tets, and connect the non-conformal meshes in Fluent ? Cheers |
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