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September 30, 2022, 11:09
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no convergence of Rayleigh benard convection
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New Member
Bob
Join Date: Aug 2022
Posts: 14
Rep Power: 3  |
I have made a steady state simulation (in ansys fluent) of a Rayleigh benard convection "RBC" (rectangular cell heated from below and cooled from above).
I have the problem that the residuals and also other values like the average temperature and heat flux fluctuate. I have also changed the mesh and the relaxation values. But that did not make it any better. My question is: The RBC is a thermally unstable system. Can this be the reason why the values and residuals do not become constant or converge? Or do I have to continue adjusting my boundary conditions? |
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| rayleigh-benard, simulation cfd |
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