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-   -   turbulent viscosity limited to viscosity ratio of? (http://www.cfd-online.com/Forums/fluent/63671-turbulent-viscosity-limited-viscosity-ratio.html)

mechfloeng April 15, 2009 18:10

turbulent viscosity limited to viscosity ratio of?
 
I'm modeling two-phase mixture, I got error message of:

turbulent viscosity limited to viscosity ratio of 1.000000e+005 in 226857 cells....

Can I get help to solve it?

Thanks

doki April 16, 2009 03:19

that is mainly because of the turbulence model you use.
set the appropriate model, and also better approximation of the turbulence parameters in inlet/outlet boundary conditions.

mbgm9mm5 April 27, 2013 08:09

Madhur Motwani
 
Hello

I have been also trying to model the flow over rib roughened passages using a realisable k epsilon model.

I am modelling the flow using periodic boundary conditions as i am modelling a flow which is already fully developed.

what should i do in order to specify my inlet turbulent parameters carefully?
I have used intensity and hydraulic diameter of the duct.

any body's help is highly appreciated.

Far April 27, 2013 10:53

is it affecting your solution convergence...

Can you show us pics of mesh please?

Please also post some pics of residuals...

itsme_kit February 6, 2014 13:45

Quote:

Originally Posted by Far (Post 423519)
is it affecting your solution convergence...

Can you show us pics of mesh please?

Please also post some pics of residuals...

Hi

I got this problem too

However, my convergence seems to be fine

Only the turbulent viscosity is the problem I faced

If velocity is not my interest of research, could I just leave it without further fix?

Cause I only care about temperature field

Hopefully you can help me a little

Thanks


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