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 Sam0508 March 14, 2012 05:12

Porous Medium-Pr Drop

Hi,
With below ref i would like to calculate/simulate pressure drop(porous as Cotton medium) by using STAR CCM+ soft.I know inlet velocity condition. How to do...plz give ur feed back...Adv thanx

Cheers,
Sam0508

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for porous medium alpha and beta values ,
i guess you have experiment/test values for pressure drop & flow rate. if you have those values you can plot DelP/unit length and velocity. if you line fit the graph (Right click on the plot in excel --add a trendline) into a quadratic function, the values you have are those for inertial and viscous resistance. please make a note no inverse values are required as in FLUENT. you need to find out what kind of resistance you have isotropic/ orthotropic ...

 LuckyTran April 23, 2012 15:16

Quote:
 Originally Posted by Sam0508 (Post 349347) Hi, With below ref i would like to calculate/simulate pressure drop(porous as Cotton medium) by using STAR CCM+ soft.I know inlet velocity condition. How to do...plz give ur feed back...Adv thanx Cheers, Sam0508 ----------------------------------------------------------------------- for porous medium alpha and beta values , i guess you have experiment/test values for pressure drop & flow rate. if you have those values you can plot DelP/unit length and velocity. if you line fit the graph (Right click on the plot in excel --add a trendline) into a quadratic function, the values you have are those for inertial and viscous resistance. please make a note no inverse values are required as in FLUENT. you need to find out what kind of resistance you have isotropic/ orthotropic ...
Hi Sam, I already answered this elsewhere but, Star-CCM will not tell you the pressure drop characteristics of your porous media. You have to know this already beforehand.

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