Pick out the correct statement pertaining to transition/ entrance length in fluid flow ?

A. 5. D.NRe

B. h that velocity profile does not change downstream, is called the transition length

C. Transition length for laminar flow of Newtonian fluids in a pipe of diameter d is equal to

D. All A., B. and C.

E. The length of entrance region of pipe, in which full development of fluid flow takes place

F. al to 50 D

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