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warning message:turbulent viscosity limited to vis

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Old   January 10, 2007, 03:20
Default warning message:turbulent viscosity limited to vis
  #1
dongtao
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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.
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Old   January 10, 2007, 16:59
Default Re: warning message:turbulent viscosity limited to
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Meng
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Sometimes, you run it for a while, the warning will vanish. Otherwise, the solution is diverged.

Meng
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Old   January 10, 2007, 23:37
Default Re: warning message:turbulent viscosity limited to
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Rajesh
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http://www.cfd-online.com/Wiki/Fluen...I_handle_it.3F
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Old   January 14, 2007, 04:45
Default Re: warning message:turbulent viscosity limited to
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dongtao
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thanks
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Old   January 16, 2007, 15:46
Default Re: warning message:turbulent viscosity limited to
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Jonas Bredberg
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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
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