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Fluent strange behaviour (occasional divergence)

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Old   March 18, 2010, 05:55
Default Fluent strange behaviour (occasional divergence)
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Did you ever see Fluent suddenly diverging at n-th iteration (or in less than 5 or 6 iterations) saying "divergence detected in AMG solver" and than restarting the case with the same settings and initial condition, calculation go over n-th iteration without diverging?

I experienced this behaviour repetadly running a particular case (that incidentally with different value in pressure inlet boundary conditions dosen't show this behaviour).

What do you suggest?

Thanks for your attention,

Ciao from Italy,

muketa
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