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August 31, 2019 at 1:57 am
Ansan
SubscriberWell, I was running eulerian-ddpm model (k-w). The simulation was running fine and smooth but after about 7400 iterations I got a problem # You may try the enhanced divergence recovery with (rpsetvar 'amg/protective-enhanced? #t), Divergence detected in AMG solver: phase-1-species-2, floating-point exception. I have worked with mesh and geometry before and had no problem. How can I solve this issue?
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September 2, 2019 at 10:56 am
Rob
Ansys EmployeeHave a look at the flow field, and see what's going on. It's likely that the previously stable solution has reached a point where the flow field is no longer stable.
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September 2, 2019 at 12:21 pm
Ansan
SubscriberWhat kind of parameter should I look at flow field, any recommendations?
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September 2, 2019 at 1:12 pm
DrAmine
Ansys EmployeeDebug the issue by looking in the files stored before the point of no return. Start then looking into velocity and phase distribution and pay attention to any stagnation or overshoots. Check if things are accumulating by enabling post-processing residuals Fluent (under /solve/set/expert). What is the scope of the case? Add more details about models and settings.
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