1. The aerodynamic drag of a Formula 1 car is to be predicted at a speed of 100 km/hr in an environment where air temperature is 25°C and the corresponding kinematic viscosity of air is v=1.60×105 m²/s. Automotive engineers build a 1/4 scale model of the car to test in a wind tunnel, where the air temperature is 10°C and kinematic viscosity of air is v=1.46×105 m²/s. A drag balance is used to measure the drag, and the moving belt is used to simulate the moving ground. Determine the speed of the wind tunnel that the engineers must run in order to achieve similarity between the model and prototype. (Ans: 365 km/hr). (Acknowledgement:http://www.invetr.com/uploads/2/1/8/2/21829402/565543954_orig.jpg)

1. The aerodynamic drag of a Formula 1 car is to be predicted at a speed of 100 km/hr in an environment where air temperature is 25°C and the corresponding kinematic viscosity of air is v=1.60×105 m²/s. Automotive engineers build a 1/4 scale model of the car to test in a wind tunnel, where the air temperature is 10°C and kinematic viscosity of air is v=1.46×105 m²/s. A drag balance is used to measure the drag, and the moving belt is used to simulate the moving ground. Determine the speed of the wind tunnel that the engineers must run in order to achieve similarity between the model and prototype. (Ans: 365 km/hr). (Acknowledgement:http://www.invetr.com/uploads/2/1/8/2/21829402/565543954_orig.jpg)

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 5.70P

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