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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Diverging AMG Solver in Fluent2024 R1 but not in 2019 R2 › Reply To: Diverging AMG Solver in Fluent2024 R1 but not in 2019 R2

April 29, 2024 at 2:22 pm
Ren
Ansys Employee

It looks that you have only wall surface reactions on the catalyst and there are no volumetric reactions. If this is true, please disable the stiff chemistry solver as the message suggested (use the default "direct source - No TCI" option).

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