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How to simulate ...Interface..???

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Old   December 30, 2001, 02:11
Default How to simulate ...Interface..???
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Sharad Dugad
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Hi all,

For open channel flow, the top surface is an air-water interface. What Boundary condition is to be set to the top surface? I mean what parameters should be given as input for proper simulation of the interface? And how to do it???

I had set "Interface" B.C. in GAMBIT. While setting the BCs in Fluent5, in "Boundary conditions" panel there is nothing to set for "Interface". How does FLUENT treat the Interface?

I tried to search Fluent as well as Gambit Manuals but could not get any information on it.

Please help..

Sharad Dugad
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Old   January 2, 2002, 02:04
Default Re: How to simulate ...Interface..???
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Jin-Wook LEE
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If you want to calculate water flow with the air interface, proper boundary condition is 'symmetry' because shear force is negligible. If you want to calculate two-phase flow(air-water flow), you should use the VOF model.

Sincerely, Jinwook
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Old   January 18, 2002, 05:14
Default Re: How to simulate ...Interface..???
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Sugen Chetty
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Doesn't symmetry assume that there is water on the other side of the interface ?
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