(a) What will be the convection heat transfer coefficient for a similar bar with L = 1 m when V =15 m/s?(b) What will be the convection heat transfer coefficient for a similar bar with L = 1 m when V =30 m/s?(c) Would your results be the same if the side of the bar, rather than the diagonal, were used asthe characteristic length? 0.5 mAirVAssume that the functional form of the Nusselt number is Nu=CRe" Pr" , where C, m, and nare constants. Experimental measurements of the convection heat transfer coefficient for asquare bar in cross flow yielded the following values:= 50 W/m? . K when V, =20 m/sh, = 40 W/m? -K when V, =15 m/s

The initial velocity of flow is V1=20 m/s. The convective heat transfer coefficient when velocity is…

(a) What will be the convection heat transfer coefficient for a similar bar with L = 1 m when V = 15 m/s? (b) What will be the convection heat transfer coefficient for a similar bar with L = 1 m when V = 30 m/s? (c) Would your results be the same if the side of the bar, rather than the diagonal, were used as the characteristic length?

(a) What will be the convection heat transfer coefficient for a similar bar with L = 1 m when V = 15 m/s? (b) What will be the convection heat transfer coefficient for a similar bar with L = 1 m when V = 30 m/s? (c) Would your results be the same if the side of the bar, rather than the diagonal, were used as the characteristic length?

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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.22P

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