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nut and nuTilda in simpleFoam

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Old   August 7, 2014, 13:42
Default nut and nuTilda in simpleFoam
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Michael Kruger
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What are the differences between nut and nuTilda in the simpleFoam solver?

In the PitzDaily simpleFoam tutorial, both nut and nuTilda are set to zero, does this mean the problem is modelled as inviscid?

In the airFoil2D tutorial both nut and nuTilda are given values of 0.14 m^2/s.

I believe the kinematic viscosity of air at room temp is about 15.11e-6 m^2/s, where in the world does the value of 0.14 m^2/s come from?? Is it perhaps because of a scaling factor introduced somewhere?

Any clarification on the subject will be greatly appreciated.

Thank you in advance.
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