Hi,
I am trying to use nucleate boiling tutorial to re simulate the same problem with the geometry I created myself. But each time I face divergence or in some cases that divergence does not happen, there is no heat transfer between the wall and liquid. I did every step exactly like the tutorial, except that I could not enable turbulence dispersion forces by TUI correctly.
In the FLUENT version I am using there is no Full multiphase coupled scheme, so I am using Coupled with volume fraction which I think is the same scheme.
I would be thankful for any suggestions for debugging the problem.
The tutorial I am using is attached.
Hello!
1. Is your single-phase converged? Do you have heat transfer between fluid and solid without boiling model?
2. How do model geometry? Is it 1 part where 2 bodies share geometry at interface (like in tutorial): in this case check Fluent setup for wall and wall-shadow to be "coupled". Another way - is to use separate bodies (no shared topology) - this time you should define mesh interface in Fluent.
Best regards
Thank you so much for your response. The single phase model does converge and the results are correct, although the residuals are not as smooth as in the tutorial. Without the boiling model I don't see any signs of heat transfer between the liquid and walls. I created the geometry with one part including solid and fluid bodies.
Two phase steady state diverges very fast but in the transient case, it seems that it is converging, signs of vapor appears at the wall but after almost 5000 iterations it diverges.
Is it possible that the turbulent dispersion force which I did not enable is the cause?
Hi, I am working on the same tutorial. Where can I find the "boiling-conjugate.msh" they are referring to in the tutorial? Thank you very much.
Best regards.
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