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Old   October 10, 2005, 11:13
Default Problem with boundary type
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I am modelling a which the fluid is static..Can someone help me with what type of boundary type should be defined for such a fluid?

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Old   October 11, 2005, 06:44
Default Re: Problem with boundary type
Vinod Dhiman
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For which equation do you need boundary condition. If it is N-S, then boudnary conditions will simply be no-slip at boundary. You can directly use Dirchilet condition. If it is Temperature boundary condition then you have to use either Neumann, or Robin's; Robin's will be better.

Vinod Dhiman
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Old   May 27, 2012, 04:19
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I want to introduce robin's boundary condition ,i wrote a UDF profile wich decrib it .When i interpreta it and hook it at wall boundary condition ,after lunch iteration ,fluent display : Error: Floating point error: invalid number ,and there is note a coenvergence.

Please what is the problem ,can you help me?

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