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-   -   TwoPhaseEuler wont converge (http://www.cfd-online.com/Forums/openfoam-solving/59454-twophaseeuler-wont-converge.html)

olivier January 31, 2006 15:37

HI, I need your help once aga
 
HI,
I need your help once again :-)
when I make turbulence "on" in bubbleColumn example for twoPhaseEulerFoam solver I have a divergence quickly.
I thought that the problem comes from turbulence model, so I try the model proposed by Sato and Sekoguchi (1975) . the result is the same (divergence)..

Can someone tell me what is the problem ?
NB: I tried the different Schemes

olivier February 3, 2006 00:00

Dear all, Can someone tell m
 
Dear all,
Can someone tell me what is the problem with turbulence in twoPhaseEulerFoam.
I changed the bubbleColumn example with another one, the result without
turbulence is correct bat when I active the turbulence (with k-epsilon or
k-epsilon modified proposed by Sato) the problem is almost the same, it appears
immediately.
I patch in the inlet k and epsilon like that:
k=3/2(Uref I)
epsilon=Cmu^(3/4) * k^(3/2)/(0.07*dinlet)
(ref: H.K VERSTEEG & W MALALASEKERA)
thank you

holger_marschall September 11, 2007 16:37

Hi, I have the same problem
 
Hi,

I have the same problem... Has nobody a solution?

regards
Holger


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