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-   -   residual of volume-fraction increases (http://www.cfd-online.com/Forums/fluent/42417-residual-volume-fraction-increases.html)

draussen September 29, 2006 09:14

residual of volume-fraction increases
 
Hello, I'm running a unsteady 2D multiphase (granular flow) problem with the eulerian model. I've ste the underrelaxation coefficient for the volume fraction up to 1 to solve a problem with the continuity residual. But now my residual for volume fraction increases in every time step. The step size is 1e-4s. That is the lowest I can handle with, because of the calculation-time. So far, does anybody has an idea what the problem could be??

thank you

twcp0104 June 7, 2012 18:57

Did you ever figure out the problem? Im having the same problem and thought you might have figured it out.


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