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What does the variable ω in the k-ω model stand for?

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in Computational Fluid Dynamics by (118k points)
What does the variable ω in the k-ω model stand for?

(a) Turbulence eddy size

(b) Turbulence eddy wavelength

(c) Turbulence frequency

(d) Turbulence large length scale

I had been asked this question during an interview.

Asked question is from Turbulence Modelling in division Turbulence Modelling of Computational Fluid Dynamics

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Right choice is (c) Turbulence frequency

To explain I would say: The variable ω means the turbulence frequency. It gives the rate at which the turbulent kinetic energy is converted into turbulent internal thermal energy per unit volume and per unit time.

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