# Porous Medium-Pr Drop

 Register Blogs Members List Search Today's Posts Mark Forums Read

 March 14, 2012, 04:12 Porous Medium-Pr Drop #1 New Member   sam Join Date: Nov 2011 Posts: 25 Rep Power: 14 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 ...

April 23, 2012, 15:16
#2
Senior Member

Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,734
Rep Power: 66
Quote:
 Originally Posted by Sam0508 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.