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Represent the velocity of turbulent flow using Reynolds decomposition.

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Represent the velocity of turbulent flow using Reynolds decomposition.

(a) Steady velocity + Mean velocity

(b) Steady velocity + Fluctuating component of velocity

(c) Variation in velocity + Fluctuating component of velocity

(d) Mean variation + Fluctuating component of velocity

This question was addressed to me during an interview.

My query is from Turbulence Modelling in division Turbulence Modelling of Computational Fluid Dynamics

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The correct option is (b) Steady velocity + Fluctuating component of velocity

Best explanation: Reynolds decomposition separates the steady mean component and some statistical properties of their fluctuations. Total velocity = Steady velocity + Fluctuating component of velocity.

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