For flow over a flat plate of length L, the local heat transfer coefficient hx is known to vary as x2, where x is the distance from the leading edge of the plate. What is the ratio of the average Nusselt number for the entire plate (NuL) to the local Nusselt number at x = L(Nu,)?

For flow over a flat plate of length L, the local heat transfer coefficient hx is known to vary as x2, where x is the distance from the leading edge of the plate. What is the ratio of the average Nusselt number for the entire plate (NuL) to the local Nusselt number at x = L(Nu,)?

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.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.15P

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Question

For flow over a flat plate of length L, the local heat transfer coefficient hx is
-1/2
known to vary as x2, where x is the distance from the leading edge of the plate. What is the
ratio of the average Nusselt number for the entire plate ( Nu1) to the local Nusselt number at x =
L( Nu,)?

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