[Swagga5aur]

Hello OpenFOAM'ers, I am working on modelling a mixing process upstream of a monolith.

The mixing process consist of two fluid streams being air and combustion gas.

Currently the mesh consists of the upstream components of the monolith, the monolith, as well as, 10 pipe diameters downstream of the monolith.

I initially solved with only air flow, resulting in a realistic flow distribution at the monolith outlet, however, as I introduced the combustible gas, being injected into the air, a large reverse flow region occurs in the center of the monolith, being quite different from my experimental results.

Note that I'm currently just solving the two gasses as both airs, with the usermade solver multiRegionSimpleReactingFoam.

Any suggestions on how to resolve this reverse flow phenomenon? as I know this is not the actual case.

Regards Lasse