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-   -   Can Fluent modify the wall function by UDF? (http://www.cfd-online.com/Forums/fluent/39203-can-fluent-modify-wall-function-udf.html)

Andy Cong January 11, 2006 23:33

Can Fluent modify the wall function by UDF?
 
Just a question.

Thanks.

Himanshu Paliwal January 15, 2006 12:31

Re: Can Fluent modify the wall function by UDF?
 
andy i am facing a similar problem i.e if the wall shows a pulsating motion i.e. expansion and contraction and this propogates as a wave i.e if the boundary coordinates of wall are r = A(1 + cos ( 2*pi *(Z-ct)/ λ )) where A is the amplitude Z is the length of the track and c is the wave speed. This can happen if the wall is elastic in nature something like blood vessels or the food pipe i.e. oesophagus.

kharicha January 18, 2006 06:35

Re: Can Fluent modify the wall function by UDF?
 
You can find in litterature the implementation of the v2f model in fluent. I think they modified the wall functions...have a look.

Good luck


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