engineering recuitment AAI JE Technical Mock Test 2020-21 Heat Transfer Convection Reynold Analogy

In turbulent flow, one can estimate the Nusselt number using the analogy between heat and momentum transfer. (Colburn analogy). This analogy relates the Nusselt number to the co-coefficient of friction, Cf as.

1
(Nu)=0.5Cf(Re)(Pr)1/3
2
(Nu)=0.5Cf(Re)(Pr)2/3
3
(Nu)=Cf.Re.(Pr)1/3
4
(Nu)=Cf.Re1/2(Pr)1/3
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