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[GAMBIT] axis Boundary conditions

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Old   September 4, 2011, 03:03
Default axis Boundary conditions
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sofia
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Hi
I need some help,how can i define the axis when it is out of domain in case of 2D annular flow in circular duct it is axsi symetric and the only mesh(annular domain ) is importes in fluent how can i do???
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Old   September 5, 2011, 02:09
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Maxime Perelli
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good question...
*Did you try to import your mesh in the 2d-axisymetric solver?Check your solver's specifications for axis BC (for instance in Fluent it has to be x>0 and your domain should belong to xy postive quarter (x&y>0))
In this case if your domain is in (xy)>0 and no cells at y=0, maybe fluent will automatically treat it right (go and display your grid with symmetries to check if Fluent reflects your grid around x)

*I never tried it, but you can also try that: in 2d you can mesh a solid domain in which your axis will be meshed. Define the solid region as solid and export

*Else you can try a workaround by switching in 3d and using symmetries.
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Old   September 6, 2011, 02:42
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thank you-mAx-
I think ,i'll try the second case with meshing the solid domain,i tried with importing mesh in the 2d-axisymetric solver but the results were wrong.
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