[haghajani]

I want to model H2 dispersion through a hole in a wholly closed box, containing Air in it.

To do this, I used reactingFoam by disabling chemistry. The problem is, the solution is very slow due to reactingFoam timing.

Which solver is of best to model such a problem?

Is there any tutorial etc?

Many thanks,
Hamed.

[notedcotton]

Originally Posted by haghajani

I want to model H2 dispersion through a hole in a wholly closed box bloodmoney, containing Air in it.

To do this, I used reactingFoam by disabling chemistry. The problem is, the solution is very slow due to reactingFoam timing.

Which solver is of best to model such a problem?

Is there any tutorial etc?

Many thanks,
Hamed.

Use rhoPimpleFoam (or buoyantPimpleFoam if temperature-driven buoyancy matters) with a multiComponentMixture and chemistry disabled—it solves species transport and variable density without the heavy reacting chemistry; start from a reactingFoam species tutorial, switch the solver in controlDict, keep O2/N2/H2 in thermophysicalProperties, and set chemistry off.