Convergence problem

Attila · January 21, 2010, 07:04

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?

Attila · January 27, 2010, 02:29

Has anybody found a similar problem by Fluent?

January 21, 2010, 07:04	Convergence problem	#1
Attila New Member Join Date: Jan 2010 Posts: 2 Rep Power: 0	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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January 27, 2010, 02:29		#2
Attila New Member Join Date: Jan 2010 Posts: 2 Rep Power: 0	Has anybody found a similar problem by Fluent?