Question 4: Consider a sphere with a diameter of 25 mm and a surface temperature of 60°C that is immersed in a fluid at a temperature of 30°C and a velocity of 2 m/s. Calculate the drag force and the heat rate when the fluid is (a) water and (b) air at atmospheric pressure. Explain why the results for the two fluids are so different.

Question 4: Consider a sphere with a diameter of 25 mm and a surface temperature of 60°C that is immersed in a fluid at a temperature of 30°C and a velocity of 2 m/s. Calculate the drag force and the heat rate when the fluid is (a) water and (b) air at atmospheric pressure. Explain why the results for the two fluids are so different.

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 5.61P

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