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-   -   Error: Divergence detected in AMG solver: x-momentum (http://www.cfd-online.com/Forums/fluent/124290-error-divergence-detected-amg-solver-x-momentum.html)

lucabiagioni October 1, 2013 10:46

Error: Divergence detected in AMG solver: x-momentum
 
I am doing a 2D wind simulation in an urban area for a small wind turbine. When I start the calculation it gives me this error!

Divergence detected in AMG solver: x-momentum -> Increasing relaxation sweeps!

Error: Divergence detected in AMG solver: x-momentum
Error Object: #f

Please help me!!!

Thanks,

Luca.

A CFD free user October 1, 2013 14:31

Hey!
With a hundred percent you forgot something, maybe appropriate values for initialization or wrong B.C. Check it.

chngyian October 2, 2013 11:30

Quote:

Originally Posted by A CFD free user (Post 454538)
Hey!
With a hundred percent you forgot something, maybe appropriate values for initialization or wrong B.C. Check it.

yup, this is possible. i got this error when using 300k instead of 350k for initialization.

lucabiagioni October 4, 2013 13:02

???
 
And now, this error?!

Cell Centroid is xc 119.995003 yc 0.368473
WARNING: no face with given nodes. Thread 10, cell 94826
Clearing partially read grid.

Error: Build Grid: Aborted due to critical error.
Error Object: #f


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