In the experiment of high Reynolds number, an airfoil of width, W= 30 cm, and chord length, C = 24 cm is subjected to airflow at 1 atm and 5 °C as shown in Figure 2.1. The airfoil can be approximated as a flat plate. The total drag force acting on the airfoil is 40.2 N. The pressure drag acting on the airfoil is measured to be 39.9 N by using pressure sensors throughout the surface. Given, the drag coefficient of the airfoil is Cp = 0.04, the density and kinematic viscosity of air at 1 atm and 5 °C is 1.269 kg/m³ and 1.382 x 10$ m²/s, respectively. i. Determine the friction drag coefficient of the airfoil.

In the experiment of high Reynolds number, an airfoil of width, W= 30 cm, and chord length, C = 24 cm is subjected to airflow at 1 atm and 5 °C as shown in Figure 2.1. The airfoil can be approximated as a flat plate. The total drag force acting on the airfoil is 40.2 N. The pressure drag acting on the airfoil is measured to be 39.9 N by using pressure sensors throughout the surface. Given, the drag coefficient of the airfoil is Cp = 0.04, the density and kinematic viscosity of air at 1 atm and 5 °C is 1.269 kg/m³ and 1.382 x 10$ m²/s, respectively. i. Determine the friction drag coefficient of the airfoil.

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 5.29P: Air at 20C flows at 1 m/s between two parallel flat plates spaced 5 cm apart. Estimate the distance...

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