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unit for permeability of air

3 REPLIES 3
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Message 1 of 4
vijay.kadli
1277 Views, 3 Replies

unit for permeability of air

I am tryin to simulate flow through the housing of an air filter.
And for the media I am giving the material as resistance.
Now, I need to enter Permeability value where the units are in m2 but the values which I have for the media air permeability is in CFM(cubic feet per minute).
I dont know how to input the value of air permeability for the media

plss help

3 REPLIES 3
Message 2 of 4
Anonymous
in reply to: vijay.kadli

it probably corresponds to a pressure difference at in- and outlet. With both values you can manually calculate a constant resistance value and use it instead of the permeability value.
Message 3 of 4
vijay.kadli
in reply to: Anonymous

hI,

bUT i EVENTUALLY NEED TO CALCULATE TH EPRESSURE DROP ACROSS THE HOUSING.

hOW IS IT POSSIBLE TO INPUT THE INLET AND OUTLET PRESSURE??

 

Message 4 of 4
srhusain
in reply to: vijay.kadli

Permeability has units of area. Look up the expression for Darcy's Law.

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