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-   -   ¿Porous Media in multiphase flow on CFX5.6? (http://www.cfd-online.com/Forums/cfx/20294-porous-media-multiphase-flow-cfx5-6-a.html)

Luis Rojas April 12, 2004 12:05

¿Porous Media in multiphase flow on CFX5.6?
 
Hi,

I have used in the past, CFX4.4 for running a simulation using porous media within part of the domain in a multiphase flow. However, in order to decide should I have to migrate yet or not, I need know if CFX5.6 could do the same. If so, could anybody let me know how to set it up?

Regards,

L.R.

roadkill April 12, 2004 20:56

Re: ¿Porous Media in multiphase flow on CFX5.6?
 
Yes. CFX-5 can do the same.

-RK

Luis Rojas April 13, 2004 00:26

Re: ¿Porous Media in multiphase flow on CFX5.6?
 
Thanks, but please let me know more details; i.e., do I have to set the porous region up as a sub-domain?, Does the concept of volume porosity exist?

I did declare the porous region as a sub-domain and set up the permeability as a resistance force (momentum resistance) in that region, but still it appears to be a wall and don't let the fluid pass through.

Thanks,

LR

Forrest April 20, 2004 07:14

Re: ¿Porous Media in multiphase flow on CFX5.6?
 
Hi, Luis

In CFX5, as you did, you can use a sub-domain to represent a porous medium in CFX4, set momentum resistances rather than volume porosity and resistance constance. The sub-domain with momentum resistances should have the similar performance as the porous medium in CFX4.

Not sure if you have a specific pressure drop after the sub-domain to achieve, if you just want to block the momentum, you need to select sensible values of resistance for the sub-domain

Hope this helps

Regards, Forrest

Luis Rojas April 20, 2004 10:36

Re: ¿Porous Media in multiphase flow on CFX5.6?
 
Thanks,

L.R.


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