Atmospheric air with free flow velocity U_∞= 30 m/s flows through a circular cylinder at T_∞= 250 K and D = 2.5 cm diameter. The surface of the circular cylinder is kept at a uniform temperature T_w = 350 K. The CD drag coefficient is 1.1. (D=1 cm- 3 cm and U_∞= 10 m/sec 30 m/s) (a) Calculate the average heat transfer coefficient ( h ̅_m,W/m2K) (b) Determine the amount of heat transfer (Q, W) per 1 m length of the cylinder (c) Calculate the drag force (FD, N) acting on the 1 m length of the cylinder

Atmospheric air with free flow velocity U_∞= 30 m/s flows through a circular cylinder at T_∞= 250 K and D = 2.5 cm diameter. The surface of the circular cylinder is kept at a uniform temperature T_w = 350 K. The CD drag coefficient is 1.1. (D=1 cm- 3 cm and U_∞= 10 m/sec 30 m/s) (a) Calculate the average heat transfer coefficient ( h ̅_m,W/m2K) (b) Determine the amount of heat transfer (Q, W) per 1 m length of the cylinder (c) Calculate the drag force (FD, N) acting on the 1 m length of the cylinder

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 5.49P

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Atmospheric air with free flow velocity U_∞= 30 m/s flows through a circular cylinder at T_∞= 250 K and D = 2.5 cm diameter. The surface of the circular cylinder is kept at a uniform temperature T_w = 350 K.The CD drag coefficient is 1.1. (D=1 cm- 3 cm and U_∞= 10 m/sec 30 m/s)(a) Calculate the average heat transfer coefficient ( h ̅_m,W/m2K)(b) Determine the amount of heat transfer (Q, W) per 1 m length of the cylinder(c) Calculate the drag force (FD, N) acting on the 1 m length of the cylinder FD=0.1 A=0.34 D=2.9 cd=1.2
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