[limowaagung11]

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

[shereez234]

Originally Posted by limowaagung11

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

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.

[CFDKareem]

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.