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Divergence in AMG Solver: every time at certain flow time |
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December 19, 2016, 00:21 |
Divergence in AMG Solver: every time at certain flow time
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Join Date: Feb 2013
Posts: 16
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Hi all,
Am running a propeller simulation in Fluent 16.2 and am getting the following error: Divergence detected in AMG solver: pressure correction -- Turning off correction scaling! Divergence detected in AMG solver: pressure correction -- Increasing relaxation sweeps! The error happens at a certain flow time (after many oscillations which go fine without a problem, all residuals convergence before the certain error time-step without issues. Have tried changing under-relaxation, AMG pressure cycle, time-step, pressure scheme, time discretisation scheme but nothing helps. The even stranger thing is that when I run it in Fluent 16 on another cluster, the solution just moves along nicely past the crash point. Any suggestions/ ideas? Thanks in advance! |
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