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The effects of the small-scale turbulence are ____________

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The effects of the small-scale turbulence are ____________

(a) normalized

(b) assumed

(c) neglected

(d) represented by random forcing functions

The question was asked by my school teacher while I was bunking the class.

Enquiry is from Turbulence Modelling in portion Turbulence Modelling of Computational Fluid Dynamics

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Correct choice is (d) represented by random forcing functions

Explanation: In the Navier-Stokes equations, the effects of small-scale turbulence are replaced by random forcing functions in the RNG k-ε model. In the Large Eddy Simulation method, these are neglected.

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