Engine oil at 20°C is forced over a 20-cm-square plate at a velocity of 1.2 m/s. The plate is heated to a uniform temperature of 60°C. Calculate the heat lost by the plate, and the drag force exerted on the first 40 cm of the plate using the analogy between fluid friction and heat transfer.

Engine oil at 20°C is forced over a 20-cm-square plate at a velocity of 1.2 m/s. The plate is heated to a uniform temperature of 60°C. Calculate the heat lost by the plate, and the drag force exerted on the first 40 cm of the plate using the analogy between fluid friction and heat transfer.

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

- Engine oil at 20°C is forced over a 20-cm-square plate at a velocity of 1.2 m/s. The
plate is heated to a uniform temperature of 60°C. Calculate the heat lost by the plate, and the
drag force exerted on the first 40 cm of the plate using the analogy between fluid friction and
heat transfer.

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