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Divergence detected in AMG solver

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Old   July 28, 2015, 03:19
Default Divergence detected in AMG solver
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Mina
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Hi every body
I am doing 2D simulation for the quenching process with the following properties:
velocity:35m/s
Temperature:1143 k
Turbulent Model :K-omega SST
Explicit RF for Momentum: 0.6
for Pressure:0.3
I use Nitrogen and Helium as a fluid for quenching
so the some material properties are set as polynomial
the first step is steady state then I have to solve it in 493k for transient
but even in steady I get the following error ant it divenges so rapidely!!!!

reversed flow in 6 faces on pressure-outlet 17.
# Divergence detected in AMG solver: pressure coupled -> Decreasing coarsening group size!
# Divergence detected in AMG solver: pressure coupled -> Increasing relaxation sweeps!
# You may try the enhanced divergence recovery with (rpsetvar 'amg/protective-enhanced? #t)

Error: Divergence detected in AMG solver: pressure coupled

Error: Divergence detected in AMG solver: pressure coupled


any solution?
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Old   December 21, 2015, 19:07
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ghof
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hi ,
i have the same problem are you solved it ?
please tel me and thank you
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Old   December 21, 2015, 19:11
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Mina
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Hi,
Thanks for the comment.yes it has already solved I had to patch the whole domain (temperature )

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Originally Posted by ghofrane View Post
hi ,
i have the same problem are you solved it ?
please tel me and thank you
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