For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is_________________?
(A) d1/(d1 + d2)
(B) d2/(d1 + d2)
(C) (d1 + d2)/d1
(D) (d1 + d2)/d2
For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is_________________?
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