Turbulent Viscosity Ratio
We are trying to simulate a subsonic (Mach no: 0.6) turbulent internal flow in an S shaped diffusing duct. We are specifying the pressure inlet turbulence boundary conditions using turbulence intensity (5%) and hydraulic diameter (0.4 meter). FLUENT calculates turbulent viscosity ratio of around 11000 at the inlet from our turbulence boundary conditions. Is this a reasonable value? We were expecting this ratio in the range of 10 to 100.
Any direct guidance on this OR any sources for finding out more will be helpful.
Re: Turbulent Viscosity Ratio
Yes I agree with you! It's pretty high! For a value of 5% of turbulence ratio, it should be about 50 in my opinion.
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