|May 28, 2013, 10:49||
Floating point error/ divergence problem
Join Date: May 2013
Posts: 4Rep Power: 5
I am simulating cryogenic boiling in fluid film bearings using Ansys fluent. My working fluid is liquid nitrogen. I tried the combination of 1)k-omega model sst, mixture model and energy equation; 2) k omega sst , eulerian model and energy equation.
In both cases some where in the iteration divergence occurs and my maximum temperature in the working domain shoots up and i get floating point error
any suggestions how to tackle this problem and any suggestions how to make a good boiling model.
i have one an other question what exactly Back flow total temperature means in the boundary conditions ( pressure outlet ---> thermal tab ---> total back flow temperature). do we have to give some rough values ? does these values have some considerable effect on our solutions? same question goes for volume back flow fractions.
Thanks and Best regards
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