Heat exchanger simulation diverges on buoyantBoussinesqSimpleFoam -- CFD Online Discussion Forums

January 14, 2014, 10:07	Heat exchanger simulation diverges on buoyantBoussinesqSimpleFoam	#1
EshitaPal New Member Eshita Pal Join Date: Mar 2012 Posts: 6 Rep Power: 14	I am trying to simulate the shell side flow of a double pipe heat exchanger using buoyantBoussinesqSimpleFoam on Openfoam 2.2.0. If I increase the velocity at inlet or make the meshing fine, then the simulation diverges. Can anyone suggest why? boundary conditions: inlet: const vel and zeroGrad pressure outlet: atmospheric pressure and zeroGrad velocity tube wall: const T and no slip shell wall: zeroGrad T and no slip turbulence model: kEpsilon Scheme: upwind

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