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Pressure/Velocity Boundary conditions

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Old   July 23, 2015, 15:52
Default Pressure/Velocity Boundary conditions
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Lori
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Hi everyone,

I have a question regarding pressure and velocity boundary conditions. I have a case where there are two channels separated by a membrane. I know the applied pressure to the inlets and the initial flow rates. So, I set the pressure inlet BC to total pressure where p0 is the applied pressure, and I used swak4foam to set a parabolic inlet velocity with the average velocity from the known flow rate.

So, my big question is how should I set appropriate outlet BCs for pressure and velocity? I wanted to set the pressure outlet to fixedValue and say the value is $internalField, but when I did that I got an error saying that "compound has already been transferred from token" and I have not been able to even figure out what that error means.

So, any suggestions on appropriate BCs?

Thankyou for replying in advance
Lori
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boundary condition, openfoam, total pressure, velocity


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