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Errors with conjugate heat transfer...

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Hello

I am new to COMSOL and I am doing simple test model of natural convection of air around hot metal cylinder. I think, that I set everything properly (like volume force etc), physics is quite easy but after 2 or 3 iterations i get errors like this:

Failed to find consistent initial values.
Undefined value found.
NaN or Inf found when solving linear system using SOR.

or similar. When i change to dierct solver it keeps increasing memory allocation factor and nothing happends.

I tried to change mesh to courser or finer, tried different solvers and options and nothing helped.

I cannot attach my model in comsol, its too big, but I can send it on email if someone would like to help.

Please help me I really run out of ideas....


0 Replies Last Post Apr 1, 2014, 6:48 a.m. EDT
COMSOL Moderator

Hello Bolesław Bródka

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