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NaN/Inf error in flui flow with k-epsilon

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Hello folks,

I was wondering if someone can provide some insight on an error that my simulation keeps
repeating:

Undefined value found.
- Detail: Undefined value found in the constraint residual vector.: NaN or Inf in vector.

I am simulating a backstep with k-epsilon turbulence model that I modified to a Low Reynolds K-Epsilon.

Can anyone give some advice on how to overcome the numerical limitation?
Maybe the Vanka preconditioner as stated in the manual?
But I am not sure how to implement it...the information on the manual is scarce on this subject....

I have attached the file for better understanding.

Best Regards,

Rui Silva


0 Replies Last Post 2 févr. 2012, 10:54 UTC−5
COMSOL Moderator

Hello Rui Silva

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