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-   -   Help with K-epsilon for 2D turbulence modelling (http://www.cfd-online.com/Forums/main/106756-help-k-epsilon-2d-turbulence-modelling.html)

aditya.pandare September 7, 2012 05:57

Help with K-epsilon for 2D turbulence modelling
 
Hi,
I'm simulating a flow though an volute casing.
I'm in the initial stages of showing grid independence.
the k-epsilon model was working fine until the no. of elements was around 2.5 lakhs.
in the 4 lakh element model im not getting a converged solution.
the residuals for continuity are not stable now.
I'm using the simple algorithm, with 2nd order upwind diff(used 1st order too; but same problem) 0.5 relaxation. its a single-phase flow.

Please suggest ways to converge this solution.
/home/ifmg/Downloads/Screenshot.png


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