Ansys Learning Forum Forums Discuss Simulation Fluids same property, but different results Reply To: same property, but different results

JIN LU
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The geometry was simply an aluminum alloy cubic box with length of sides 200mm, inside which was a phase change material with latent heat 100J/g. Heat flow of 1000W was applied to one of the box's six surfaces, lasting for 150s. The ambient temperature was set to 60℃.

Actually I don't know whether the solver converge or not. In the Steady-State Thermal module, the solving process can always be done and the solution gave an exact temperature contour result. But I did't find the residual curve of the solving process, which is very clear and apparent in Fluent module.

I understand that Fluent deals with fluid dynamics depicted by several partial differential equations, which makes it difficult to converge. In Fluent, very different results even under the same initial conditons is normal. But for steady-state thermal problem as my case, no eradiation, no convection, the solver only needs to deal with Fourier's heat conduction equation, non-convergence is rare.

Could you tell me how to judge whether the solver converge or not in steady-state thermal module?