Colebrook equation for friction factor in turbulent flow is given by, f -0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to (A) 0(B) 1 (C) ∞ (D) 0.5

Colebrook equation for friction factor in turbulent flow is given by,
f
-0.5 = -4 loge
[(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a
value of (ϵ/D) equal to
(A) 0

(B) 1
(C) ∞
(D) 0.5
by

1 Answer

Answer :

(B) 1
by

Related questions

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Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0 ) with age/time (t) (where, ε = roughness of the surface after time't'. α = a co-efficient to be experimentally determined)? (A) ε = ε0 + α.t (B) ε = ε0 + α.t 2 (C) ε = ε0 + α.t 3 (D) ε = ε0 + α.t

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