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-   -   how to setup boundary condition (http://www.cfd-online.com/Forums/main/7405-how-setup-boundary-condition.html)

young April 8, 2004 20:23

how to setup boundary condition
 
hi all. it seems not trivial for me to set up the proper boundary condition even for the channel flow. could anybody give me some help ? here is the way i tried, which gave me the blown solution only.

u : upper(0), lower(0), inlet(float), outlet(float) v : upper(0), lower(0), inlet(0), outlet(float) p : upper(float), lower(float), inlet(pi), outlet(po)

i am using SIMPLE algorithm, which might be the cause of this chaos. thank you.

Des Aubery April 8, 2004 23:13

Re: how to setup boundary condition
 
It would help if you stated which package/software you are using.

Regards, Des Aubery... (adTherm Technology - ww.adtherm.com)

young April 9, 2004 02:30

Re: how to setup boundary condition
 
hi Des~ i made my own code in matlab using SIMPLE algorithm. have a good day~

sincerely, young

versi April 10, 2004 05:34

Re: how to setup boundary condition
 
u,v = streamwise extrapolation at outlet.

young April 11, 2004 20:57

Re: how to setup boundary condition
 
thanks a lot, versi. let me try it.


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