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turbulent viscosity limited to viscosity ratio |
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April 30, 2004, 03:26 |
turbulent viscosity limited to viscosity ratio
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#1 |
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Hi
My solution is going to converge but after each iteration I am getting messege that " turbulent viscosity limited to viscosity ratio 1.000000e+05 on x cells". I am using realizable k-epselon model with standard wall function. Anyone please help me to get rid this problem. Thanks Mukkarum |
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April 30, 2004, 05:26 |
Re: turbulent viscosity limited to viscosity ratio
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#2 |
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This problem usually happens if you have a too coarse grid somewhere in your domain. Plot a contour of the viscosity ration and try to refine the grid there.
Look for other messages on this subject too, there are a lot of questions and answers in this forum. Hi ap |
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May 7, 2004, 03:33 |
Re: turbulent viscosity limited to viscosity ratio
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#3 |
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In fluent u just goto
SOLVE.....CONTROLS.....LIMITS .. in limits increase the value of Max. turbulent viscosity ratio to 1.0e10+07... ..it is just the limit...it will not affect ur final solution.....afterward u will not get the mentioned message and u will get faster convergence..CERTAINLY ..try once best luck! |
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May 11, 2004, 05:05 |
Re: turbulent viscosity limited to viscosity ratio
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#4 |
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I don't agree. The limit on turbulent viscosity ratio has been introduced to obtain a stable numerical solution, but it's not necessarily correct.
FLUENT sets the limit using a value which is acceptable in many cases, but if the limitation takes place it could affect the solution. Hi ap |
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