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Convergence problem

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Old   January 21, 2010, 08:04
Default Convergence problem
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I have a quite simple task in Flent: there is a cube, what is heated inside a box (aluminimum). The box is at open air. I tried to use Boussinesq-model to model air flow inside, and outside the box and it doesn't work, the calculation diverges after some steps. If I put a cube with similar geometry at open air the simulation runs fine, and it's converging. What can be the problem? The geometry is very-very simple and the mesh is excellent, that way I make something wrong in Fluent, I think. Can anybody help me?
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Old   January 27, 2010, 03:29
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Has anybody found a similar problem by Fluent?
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