warning message:turbulent viscosity limited to vis
 

when I use the KW model, after itera serveral times, FLUENT give the warning message:turbulent viscosity limited to viscosity ratio of 1.000000e+005 in 421510 cells. But according to the formula in Fluent, the viscosity ratio of my model is far less than 1.000000e+005 , what can I do for this problem? when I use the ke model, this warning message of limit number could become vanished.

Re: warning message:turbulent viscosity limited to
 

Sometimes, you run it for a while, the warning will vanish. Otherwise, the solution is diverged.

Meng

Re: warning message:turbulent viscosity limited to
 

Re: warning message:turbulent viscosity limited to
 

thanks

Re: warning message:turbulent viscosity limited to
 

1) If you are certain that this is correct (mostly not) you can relax the limiter, removing the error-message. However this will of course mean that your flow will become very viscid! 2) If the number of cells are less than, say 1% of the total number, this may be temporary and vanish with "iteration-time", or alternatively result from some "bad" cells 3) If you switch from k-epsilon to k-omega during an iteration, this may occur temporary. If it not disappear with "time", I suggest to re-initialize the solution with k-omega and start over