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-   -   Problem with boundary type (http://www.cfd-online.com/Forums/fluent/38182-problem-boundary-type.html)

Shanti October 10, 2005 11:13

Problem with boundary type
 
Hi

I am modelling a mould...in which the fluid is static..Can someone help me with what type of boundary type should be defined for such a fluid?


Vinod Dhiman October 11, 2005 06:44

Re: Problem with boundary type
 
Hi

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

moun139 May 27, 2012 04:19

Hi,

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?

thx


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