Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone.
A)Laminar
B)Transition
C)Both 'a' & 'b'
D)Highly turbulent

Question

Quizplus · Accepted Answer

In the highly turbulent flow regime, the convective heat transfer coefficient becomes independent of the tube length/diameter ratio because the turbulence ensures a uniform mixing of the fluid, which dominates the heat transfer characteristics, making them less sensitive to the geometry of the tube.

Convective Heat Transfer Co-Efficient in Case of Fluid Flowing in Tubes