Example 3 The drag coefficient of a car increases when the sunroof is open, and it requires more aerodynamic drag. The car has a frontal area of 1.7 m2; and the C, values when the sunroof is closed and open are 0.32 and 0.41, respectively. If the car is moving at a constant velocity of 55 km/hr, determine the additional power consumption of the car when the sunroof is opened . Take the density of air to be 1.2 kg/m³. (a) if the air is calm, (b) if wind is blowing against the direction of the motion of the car at 30 km/hr, and (c) if wind is blowing in the same direction of motion of power to overcome the car at 50 km/hr.

Example 3 The drag coefficient of a car increases when the sunroof is open, and it requires more aerodynamic drag. The car has a frontal area of 1.7 m2; and the C, values when the sunroof is closed and open are 0.32 and 0.41, respectively. If the car is moving at a constant velocity of 55 km/hr, determine the additional power consumption of the car when the sunroof is opened . Take the density of air to be 1.2 kg/m³. (a) if the air is calm, (b) if wind is blowing against the direction of the motion of the car at 30 km/hr, and (c) if wind is blowing in the same direction of motion of power to overcome the car at 50 km/hr.

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 5.24P: Engine oil at 100C flows over and parallel to a flat surface at a velocity of 3 m/s. Calculate the...

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