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-   -   Permeability for porous zones (http://www.cfd-online.com/Forums/fluent/33032-permeability-porous-zones.html)

A8anato_psofimi February 14, 2004 08:48

Permeability for porous zones
 
Hello, I have porous zones in my model, and I need help determining the permeability alpha and inertial coefficient C2, mentioned in the Fluent help. I know the porosity, and the actual geomtry of the perforated plates. However, I do not have pressure drop data. There is another equation that involves a C coefficient based on Reynolds number. In the help it says it is tabulated, but I do not know where to get the table values. Does anyone know where to find this table? Or does anyone know a different method for calculating permeability based on the geometry of the porous zone?

Evan Rosenbaum February 17, 2004 13:25

Re: Permeability for porous zones
 
You need a function for the pressure drop through a perforated plate. Idel'Chik gives several such functions. Then you can set your function equal to the sink term from the FLUENT manual to solve for alpha and C2.


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