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-   -   inertial resistance UDF (http://www.cfd-online.com/Forums/fluent/34757-inertial-resistance-udf.html)

Arnout Klinkenberg October 4, 2004 07:36

inertial resistance UDF
 
Wich macro do I have to use for setting the inertial resistance in the porous zone panel? (BOUNDERY CONDITIONS --> fluid --> POROUS ZONE). In the manual: DEFINE_PROPERTY, but if I do that it gives two error: 1!=2 and void udf function expected

Thank you for helping me!

Naresh October 4, 2004 10:08

Re: inertial resistance UDF
 
Hi Mr.Arnout, You must use Define_profile macro for that it is a mistake in fluent manual.

Regards!

zhhjll June 22, 2011 05:16

I want to model a micro filter, This filter (membrane) is rectangular (105 cm) with the thickness 12e-5. so,I calculate this parameters from Ergun equation which D=1e-6, because of the Micro filter type. is this assumption true??
i think this is very thin filter so there in not flow through in the membrane, in this situation is inertial coefficieant higher in Y direction? or not?when i set y-direction inertial coefficient higher than x-direction got better answer! is this resonable?

xdanielx June 22, 2011 06:07

Probably you should model this as a porous-jump. With this assumpion you do not need to resolve the thickness ...

good luck


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