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-   -   residuals problem (http://www.cfd-online.com/Forums/fluent/28809-residuals-problem.html)

ydzhang August 11, 2001 22:50

residuals problem
 
Dear fluent users:

I have a problem about residuals.I model a 13-spieces problem.The stucture of flowfields is correct,and the results seem to be accepted.I adapted the mesh and the solution changes very little. So, maybe it is independent of mesh. But the scaled residuals of some variables only decrease to 1e-2,then fluctuate.I check the flux.It balanced.I don't meet this situation before.I want to know why the scaled residuals don't decrease.

many thanks in advance

ydzhang


Herve August 13, 2001 10:37

Re: residuals problem
 
... maybe need more underrelaxation.

ydzhang August 14, 2001 01:42

Re: residuals problem
 
Thanks Herve!

I have selected the coupled solver,not Seg solver.No underrelaxation factors need. any other advices are welcome! ydzhang 2001/8/14


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