Atmospheric air at 275 K and free stream velocity of 20 m/s flows over a 1.5 m long flat plate maintained at a uniform temperature of 325 K, calculate: (a) The average heat transfer coefficient over the region of laminar boundary layer ; (b) The average heat transfer coefficient over the entire length of 1.5 m ; (c) The total heat transfer rate from the plate to the air over 1.5 m length and 1 m wide. Assume transition occurs at Reer 2 x 10°. (SNB)

Atmospheric air at 275 K and free stream velocity of 20 m/s flows over a 1.5 m long flat plate maintained at a uniform temperature of 325 K, calculate: (a) The average heat transfer coefficient over the region of laminar boundary layer ; (b) The average heat transfer coefficient over the entire length of 1.5 m ; (c) The total heat transfer rate from the plate to the air over 1.5 m length and 1 m wide. Assume transition occurs at Reer 2 x 10°. (SNB)

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 7.38P

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Question

Atmospheric air at 275 K and free stream velocity of 20 m/s flows over a 1.5 m long
flat plate maintained at a uniform temperature of 325 K, calculate: (a) The average heat
transfer coefficient over the region of laminar boundary layer ; (b) The average heat
transfer coefficient over the entire length of 1.5 m ; (c) The total heat transfer rate from
the plate to the air over 1.5 m length and 1 m wide. Assume transition occurs at Recr
2 x 105. (SNB)

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