CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   turbulence problem (http://www.cfd-online.com/Forums/fluent/33520-turbulence-problem.html)

Jason April 19, 2004 08:39

turbulence problem
 
I tried to find the Cd of truck (external flow). The message always showed : turbulent viscosity limited to viscosity ratio of 1.000E+05 What does it mean? My simulated result is fault?

STK April 19, 2004 09:16

Re: turbulence problem
 
this means that you have problems in convergence. lots of times i have seen it but after some iterations it vanishes.in your case you have AMD divergence error?IF YOUR PROBLEM CONVERGES THERE IS NO PROBLEM WITH THAT IN THE FIRST ITERATIONS.

Jun April 19, 2004 11:31

Re: turbulence problem
 
Agree with STK. You may find where the turbulent viscosity is over the limit and check if the quality of your grids is good there.


All times are GMT -4. The time now is 00:58.