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-   -   porosity (http://www.cfd-online.com/Forums/fluent/46779-porosity.html)

ravi December 10, 2007 04:51

porosity
 
Hi to all. can anyone tel me how to use porosity option.. in my problem i know only porosity.. can i give the value of the porosity with physical velocity formulation without specifying the inertial coefficients (C2). does it give correct results.. i need to find the pressure drop across the porous zone. plz let me know.. thanks in advance

Nuray Kayakol December 10, 2007 05:14

Re: porosity
 
You need to give pressure drop coefficents. Delta P = 1/2 *friction factor*rho*U(min )

Chee Onn December 13, 2007 21:50

Re: porosity
 
Hi,

it is better that you find the pressure drop across the porous zone, ie. delta P vs vel. You may refer to fluent manual in order to calculate the inertial coefficient C2 and viscous coefficient 1/alpha.


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