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-   -   Comparing convection and diffusion in fluent (http://www.cfd-online.com/Forums/fluent/49012-comparing-convection-diffusion-fluent.html)

Emmanuel August 13, 2008 22:39

Comparing convection and diffusion in fluent
 
Hi,

Just wondering if anyone can help with this... I've got two streams separated by a solid. To reach the solid boundary, the bulk channel flow must pass through a porous region.

I'd like to compare the solutions when Navier-Stokes is solved normally to that when the transport in the porous region is by mass diffusion only. The channel flow will is is solved by Navier-Stokes in both cases...

I'd be greatful for any input on how to implement this. I've tried setting the velocity values in the porous regions to zero, but I get an erroneous, albeit stable, solution.

Anyone have any ideas out there?

Thanks,

Emmanuel


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