When I am solving a geometry with coarse mesh, I am getting convergence and reversed flow upto only 23 iteration at outlet surface.
But, same geometry with finer mesh and all other same conditions, there is reversed flow and no convergence.
Anyone tell me the reason of this!!!
Re: reversed flow
Well, you should give more information about your case.
However, if reversed flow is acceptable in your case, you should use pressure_outlet BC instead of outflow (if you're using it) and properly set B.C.
Usually this improves convergence and stability of the solution.
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