A cube is being cooled within a tubethat has air being pushed by a fan.The heat transfer coefficient (h) for thecube is lower when it is at the centerof the tube, and higher when it is atthe edges (resulting in a concave upparabola when it is plotted against theposition). Why does this occur?

To explain: The reason of variation in heat transfer coefficient for the given conditions.

at has air being pushed by a fan. e heat transfer coefficient (h) for the be is lower when it is at the center the tube, and higher when it is at e edges (resulting in a concave up rabola when it is plotted against the

at has air being pushed by a fan. e heat transfer coefficient (h) for the be is lower when it is at the center the tube, and higher when it is at e edges (resulting in a concave up rabola when it is plotted against the

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.1P: 6.1 Determine the heat transfer coefficient at the stagnation point and the average value of the...

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Question

A cube is being cooled within a tube
that has air being pushed by a fan.
The heat transfer coefficient (h) for the
cube is lower when it is at the center
of the tube, and higher when it is at
the edges (resulting in a concave up
parabola when it is plotted against the
position). Why does this occur?

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