Turbulence Viscosity Limited To 100000 But I Have My Case Converged

Andi_Didi · May 12, 2016, 03:29

Hello there, I have questions
I ran simulation about flow across inlet duct HRSG with Fluent 6.3.26, with the parameters were :
1. Turbulence model : Realizable k-epsilon
2. Standard wall function
3. k-epsilon model : Turbulence Intensity (10%) and hydraulic diameter
4. Residual monitor : 10-4
5. Inlet : Velocity inlet
6. Outlet : Outflow
7. Using Energy Equation

and i built the superheater tube geometri in my simulation.

while I was running the simulation, there was warning about "turbulent viscosity ratio limited to viscosity ratio of 100000 in ..... cells."

But in 1000 iterations my case was converged and the warning was not vanished yet. Can somebody explain what's wrong in my simulation?
Is my result valid ?

I'd appreciate for your help
Thanks

Regards

Andi_Didi · May 13, 2016, 21:30

Please, can anybody help me ?

May 12, 2016, 03:29	Turbulent Viscosity Limited To 100000 But I Have My Case Converged	#1
Andi_Didi New Member Andi Join Date: Jun 2015 Location: Indonesia Posts: 17 Rep Power: 10	Hello there, I have questions I ran simulation about flow across inlet duct HRSG with Fluent 6.3.26, with the parameters were : 1. Turbulence model : Realizable k-epsilon 2. Standard wall function 3. k-epsilon model : Turbulence Intensity (10%) and hydraulic diameter 4. Residual monitor : 10-4 5. Inlet : Velocity inlet 6. Outlet : Outflow 7. Using Energy Equation and i built the superheater tube geometri in my simulation. while I was running the simulation, there was warning about "turbulent viscosity ratio limited to viscosity ratio of 100000 in ..... cells." But in 1000 iterations my case was converged and the warning was not vanished yet. Can somebody explain what's wrong in my simulation? Is my result valid ? I'd appreciate for your help Thanks Regards Last edited by Andi_Didi; May 22, 2016 at 01:39.

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May 13, 2016, 21:30		#2
Andi_Didi New Member Andi Join Date: Jun 2015 Location: Indonesia Posts: 17 Rep Power: 10	Please, can anybody help me ?