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Laci March 31, 2009 07:02

Continuity problems
 
I have a convergence problem with the continuity. Everything has converged easily except this. I use segregated ske model. DPM also exists.
I checked the fluxes of materials and difference of in/out is 0.1% compare to the total flow.
The residual is 2.44*10^-2. Is it cause by this small difference:confused:

mbernard March 31, 2009 07:29

hello
do have a real divergence on continuity, or you just think you have a problem because of the residual values?

To my mind, 10^-2 isn't so bad in free convection case for example...



do you plot some surfaces values during the computation? is the a stabilisation of these values?

Regards

Laci March 31, 2009 08:35

Quote:

Originally Posted by mbernard (Post 211394)
hello
do have a real divergence on continuity, or you just think you have a problem because of the residual values?

To my mind, 10^-2 isn't so bad in free convection case for example...



do you plot some surfaces values during the computation? is the a stabilisation of these values?

Regards

Thank you very much for your answer.
The stabilization is good. I had some instability problem with epsilon but grid adaptation and lower urf solved it.
You are right, I also have free convection in my system, but not only free convection... Maybe it is caused by free convection. :rolleyes:
The temperature surfaces show reasonably good results. :)


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