1. In flow over a surface, velocity and temperature profiles are of the forms u(y)=Ay+By²-Cy³ and T(y)=D+Ey+Fy²+Gy³ where the coefficients A through G are constants. Obtain expressions for the friction coefficient Cf and the convection coefficient h in terms of u∞, T∞, and appropriate profile coefficients and fluid properties. Answer: h= -k[E D To

1. In flow over a surface, velocity and temperature profiles are of the forms u(y)=Ay+By²-Cy³ and T(y)=D+Ey+Fy²+Gy³ where the coefficients A through G are constants. Obtain expressions for the friction coefficient Cf and the convection coefficient h in terms of u∞, T∞, and appropriate profile coefficients and fluid properties. Answer: h= -k[E D To

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 5.54P

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Q2) In flow over a surface, velocity and temperature profiles are of the forms u(y) = Ay + By² + Cy3 and T(y) = D+ Ey + Fy? - Gy3 where the coefficients A through G are constants. Obtain expressions for the friction coefficient C, and the convection coefficient h in terms of uo, To, and appropriate profile coefficients and fluid properties. Q3) Water at a temperature of T = 25°C flows over one of the surfaces of a steel wall (AISI 1010) whose temperature is Ts1 = 40°C. The wall is 0.35 m thick, and its other surface temperature is Ts,2 = 100°C. For steady state conditions what is the convection coefficient associated with the water flow? What is the temperature gradient in the wall and in the water that is in contact with the wall? Sketch the temperature distribution in the wall and in the adjoining water.
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