hey,

Does anyone knows how to use buoyancy on a porous medium in CFX? Because, as soon as I add an isotropic loss model with a resistance loss coefficient, I get a big pressure jump on the interface porous-fluid... the pressure goes up to 40000Pa on the interface, whereas it's between 0 and 300Pa on the rest of the domain (which is in agreement with my boundary conditions).

I tried to set the medium as non porous and I had no such dicontinuity. I also tried to put it porous but non buoyant, and I didn't have any discontinuity either. But when both are involved....

Does anyone has a solution? Can I set buoyancy in some domain only (the non porous ones) and not in others?

Thanks,

Guillaume

You need to switch to fleutn for this I think

There is a bug when plotting hybrid pressure on porous interfaces in CFX... look only at 'conservative' pressures... hopefully the solution itself is ok... otherwise contact your support group.

Thanks Donald. Very helpful and full of insight