what is this warning?

Vladimir001Vladimir001 Member Posts: 3

Subiter 18 : residual 4.09558e+00

Warning: AMG preconditioner correction is of poor quality.

Subiter 19 : residual 4.09553e+00

Warning: AMG preconditioner correction is of poor quality.

Subiter 20 : residual 4.09552e+00

(Ref: Subiter 0 : residual 4.09578e+00)

59 7.2506e-02 1.8208e-01 1.4449e-01 2.2747e-01 7.8608e-03 3.3508e-03 04:23:02 442

Subiter 0 : residual 4.09552e+00

Warning: the residual minimization scheme stalls, therefore the scheme is initialized and the adjoint advancement is terminated.

** Suggestion: increase the number of modes in the residual minimization scheme if there is enough memory.


Good afternoon, I'm solving a topological optimization problem. When solving, a warning is issued and further solution does not go. What does this mean? I have been working in Fluent Fluent for 1 year and there has never been such a problem. Mesh triangular


after that the solution stops

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