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Gambit Axisymmetric Neutral File Problem

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Old   August 20, 2010, 09:51
Default Gambit Axisymmetric Neutral File Problem
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Sandy Stewart
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Hello,

I am trying to convert an axisymmetric mesh from a Gambit mesh to OpenFoam. I have created a wedge-shaped 3-D model of a nozzle in Gambit, and have created all the 2D boundaries: inlet, outlet, frontAndBack, and top (= 5 degree curved outer surface of the nozzle). I also created a 1D boundary called "axis" from the edges along the axis of symmetry.

However, when I export a neutral file (*.neu) from Gambit (solver set to "generic") to convert to OpenFoam, it does not export the axis boundary element properly, and gives an error "Boundary entity axis does not contain any valid entity and is not written." The .neu file created has all the other boundaries defined, but not axis.

Can anyone help?
Thanks,
Sandy
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Old   August 30, 2010, 16:42
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Mirko Vukovic
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Quote:
Originally Posted by SandyS View Post
Hello,

I am trying to convert an axisymmetric mesh from a Gambit mesh to OpenFoam. I have created a wedge-shaped 3-D model of a nozzle in Gambit, and have created all the 2D boundaries: inlet, outlet, frontAndBack, and top (= 5 degree curved outer surface of the nozzle). I also created a 1D boundary called "axis" from the edges along the axis of symmetry.

However, when I export a neutral file (*.neu) from Gambit (solver set to "generic") to convert to OpenFoam, it does not export the axis boundary element properly, and gives an error "Boundary entity axis does not contain any valid entity and is not written." The .neu file created has all the other boundaries defined, but not axis.

Can anyone help?
Thanks,
Sandy
My Gambit axisymmetric geometry did not include the 1D axial boundary. Conversion to OF and simulation went fine. So you may want to delete that boundary and proceed without it.

Mirko
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Old   October 14, 2010, 14:43
Default Gambit Problems
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Sandy Stewart
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Hi Mirko,

Thanks for your reply, and sorry to take so long getting back to you. I will give your suggestion a try, but I think that is where I started, with no 1-D boundary along the axis. I'll have to check.

Cheers,
Sandy
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Old   March 25, 2014, 08:01
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Peter
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Hi, Mirko!

How do you convert a gambit mesh to OpenFOAM axisymmetric mesh? Is your gambit mesh a wedge-shaped 3-D mesh or a 2-D mesh?

Kind regards,
Peter
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Old   March 25, 2014, 08:08
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Peter
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Hi, Mirko!

How do you convert a gambit mesh to OpenFOAM axisymmetric mesh? Is your gambit mesh a wedge-shaped 3-D mesh or a 2-D mesh?

Kind regards,
Peter
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axisymmetric problem, conversion, gambit 2.2.30

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