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parabolic velocity with unsteady simulation

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Old   March 16, 2010, 07:42
Post parabolic velocity with unsteady simulation
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MONA
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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
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Old   March 17, 2010, 08:08
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Vinicius Girardi
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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 ?
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Old   March 18, 2010, 07:43
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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.
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