Laminar flow normally persists on a smooth flat plate until a critical Reynolds number value is reached. However, the flow can be tripped to a turbulent state by adding roughness to the leading edge of the plate. For a particular situation, experimental results show that the local heat transfer coefficients for laminar and turbulent conditions are hx,lam (1.74 W/m¹.5. K)x-0.5 and hx.turb (3.98 W/m¹.8. K ) x-0.2, respectively. Calculate the average heat transfer coefficients, in W/m²-K for laminar and turbulent conditions for plates of length L = 0.1 m. = Llam = hL,turb = i i W/m².K W/m².K

Laminar flow normally persists on a smooth flat plate until a critical Reynolds number value is reached. However, the flow can be tripped to a turbulent state by adding roughness to the leading edge of the plate. For a particular situation, experimental results show that the local heat transfer coefficients for laminar and turbulent conditions are hx,lam (1.74 W/m¹.5. K)x-0.5 and hx.turb (3.98 W/m¹.8. K ) x-0.2, respectively. Calculate the average heat transfer coefficients, in W/m²-K for laminar and turbulent conditions for plates of length L = 0.1 m. = Llam = hL,turb = i i W/m².K W/m².K

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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