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How to give out U in ratio to inflow-velocity

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Old   March 8, 2011, 08:06
Default How to give out U in ratio to inflow-velocity
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Martin
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Dear community,

is there a chance to give out the velocity of each field in ratio to the inflow velocity (standardize) it and make it visible in paraView?

Maybe with foamCalc? But i have no idea about the syntax?

Could someone help me?

thank you very much

Martin
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Old   March 8, 2011, 08:16
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Bernhard
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You can choose U at your inlet to be 1, and scale your viscosity accordingly? When you normalize your Navier-Stokes equations, it should be not too difficult.
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Old   March 8, 2011, 08:24
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Thank you very much for you answer.

I do not really understand what you mean. It is a post-process work. So i wont make in inflow of 1. Or do you mean, it is possible to scale this in paraView? If you mean this, could you tell me how to do it?
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Old   March 8, 2011, 10:42
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Well, it depends on what you want to achieven. Of course it can be done in Paraview as well (Calculator of Python Calculator filter). You can also try to solve the non-dimensional Navier-Stokes equations in OpenFOAM, that is equivalent.
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Old   March 9, 2011, 05:16
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Dear Bernhard,

that was helpful, thank you. I used foamCalc to get magU (a scalar) and having this i was able to take the calculator filter to calculate magU/inflow velocity!!!

Thank you very much

Martin
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