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Divergence detected in AMG solver Temperature

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Old   January 6, 2016, 13:32
Default Divergence detected in AMG solver Temperature
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I am using 3D/wing in mach 0.96. I meshed the domain in gambit with structured mesh.
I have to use Pressure-far-field boundary to insert the exact mach number to my simulation. Pressure-far-field needs ideal gas, then therefore the Energy equation is turned on.

I ran my simulation in mach No 0.6 and it was okay. But in mach No 0.96 after about 2 iterations the "Divergence detected in AMG solver Temperature" showed.

I don't no what is the problem and how i can fix this.
Please help me if anyone have the same problem and solve it.
thanks in advance.
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amg solver, divergence, fluent 15.0, temperature limit

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