counter flow
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Hello
I am trying to develop counter flow model (schematic diagram attached). I am expecting a stagnation plane to be formed in the middle and flow should be going outward with two little vertices formed around the edges the, instead I am finding a reverse flow situation in OpenFOAM. I have run the same simulation in Fluent and it is giving me conceivable streamline pattern. I am using icoFoam solver. Following boundary condition I am providing for outlet: for 0/U internalField uniform (0 0 0); outlet { type pressureInletOutletVelocity; value $internalField; } for 0/p internalField uniform 101325; outlet { type totalPressure; p0 $internalField; } Results from Fluent aligns with theoretical understanding of fluid mechanics. Why OpenFOAM is causing reverseflow? I understand that near the edge there is a pocket if negative pressure, but that should not cause a steady state solution with forming a jet (contributed by reverse flow coming from outlet!) |
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