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!

Re: inertial resistance UDF
 

Hi Mr.Arnout, You must use Define_profile macro for that it is a mistake in fluent manual.

Regards!

I want to model a micro filter, This filter (membrane) is rectangular (10×5 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?

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

good luck