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-   -   parabolic velocity with unsteady simulation (http://www.cfd-online.com/Forums/star-ccm/73751-parabolic-velocity-unsteady-simulation.html)

mona_zooghool March 16, 2010 07:42

parabolic velocity with unsteady simulation
 
Hello,

could anyone possibly guide me how to run unsteady simulation using aparabolic velocity inlet please?
my equation is :

2*u*(1-(r^2/R^2))

I think i have to creat a field function which is time dependant but so far i have not been successful...:(

Thanks a lot

Vinicius March 17, 2010 08:08

Im not seeing the time in your equation, and what you mean with r and R. You have to create field functions, and probably a local coordinate system to set the r and R properly. Can you explain better your equation ?

mona_zooghool March 18, 2010 07:43

Thank you
 
Thanks a lot for your reply, I believe I have to use the navier stokes equation in the Star ccm+. but my problem is that the software gives me error when i put the code in the new field.:confused:


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