pressure jump coefficient

zxian · May 29, 2013, 00:05

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?

blackmask · May 29, 2013, 06:32

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.

May 29, 2013, 00:05	pressure jump coefficient	#1
zxian New Member ze xian Join Date: May 2013 Posts: 1 Rep Power: 0	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?

May 29, 2013, 06:32		#2
blackmask Senior Member Join Date: Aug 2011 Posts: 421 Blog Entries: 1 Rep Power: 21	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. WhiteB likes this.

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