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I Really Desperate For Help, Floating Point Exceed |
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June 14, 2023, 05:20 |
I Really Desperate For Help, Floating Point Exceed
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#1 |
New Member
Agung
Join Date: Jun 2023
Posts: 4
Rep Power: 3 |
I Have model and i've been struggling for 5 days with this fluent issue. It always says that my floating point is exceeded and i have tried everything including re-meshing (Which doesn't have significant changes) and reducing timestep. Anything can help me. Can it be like a memory issue because I run this in really tight memory
My model have 13 m cell and i run it on Core I7, 16 GB RAM. the console error says Stabilizing k to enhance linear solver robustness. Stabilizing k using GMRES to enhance linear solver robustness. Divergence detected in AMG solver: k Stabilizing omega to enhance linear solver robustness. Stabilizing omega using GMRES to enhance linear solver robustness. Divergence detected in AMG solver: omega Stabilizing temperature to enhance linear solver robustness. Stabilizing temperature using GMRES to enhance linear solver robustness. Divergence detected in AMG solver: temperature Error at host: floating point exception |
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June 14, 2023, 12:55 |
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#2 | |
Senior Member
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Quote:
I don't think this a memory issue, as a base line setup I always run the simulation on a coarse mesh. Does that help? If that works, then go to medium or fine mesh. Secondly, turn off equations for turbulence and let velocity and pressure settle for 300-400 iterations, then turn turbulence back on. |
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June 14, 2023, 14:00 |
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#3 |
Senior Member
Kareem
Join Date: Nov 2022
Location: New York
Posts: 125
Rep Power: 5 |
The divergence in the solver means that the numeric are diverging and leading to the floating point error.
I would double check your boundary conditions, mesh quality, and solver settings. This kind of divergence is common when you have poor mesh quality. A single mesh of very poor quality can lead to divergence in the solver.
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floating point exception, fluent, meshing |
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