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pressure jump coefficient

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Old   May 29, 2013, 01:05
Default pressure jump coefficient
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ze xian
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can anyone tel me how to calculate face permeability?KL that i found is 10, and i gt C2 value.since i know the density and velocity before enter the porous media, so i can calculate the pressure drop.
by using Darcy law,
i try to calculate face permeability.but what i get is negative value. is that possible?
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Old   May 29, 2013, 07:32
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You should show us how you obtained the face permeability. The face permeability given by Darcy's law, which is the permeability divided by the cross-section area, should be positive.
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