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According to Reynolds analogy, what is the value of turbulent Schmidt number?

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in Computational Fluid Dynamics by (118k points)
According to Reynolds analogy, what is the value of turbulent Schmidt number?

(a) -1

(b) 0

(c) 1

(d) ∞

The question was posed to me during an online interview.

My question is taken from Turbulent Schmidt Number in section Turbulence Modelling of Computational Fluid Dynamics

1 Answer

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Best answer
Correct choice is (c) 1

The explanation is: Reynolds analogy states that “because of eddy mixing, the values of turbulent viscosity and turbulent diffusivity will be fairly close to each other”. So, dividing both we will get unity. Therefore, turbulent Schmidt or Prandtl number becomes unity.

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