Question

a circular pipe of 25-mm outside diameter is placed in an airstream at 25c and 1-atm pressure. the air moves in cross flow over the pipe at 15 m/s, while the outer surface of the pipe is maintained at 100c. what is the drag force exerted on the pipe per unit length?

Answer 1

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11 logu z flot Given- u=15 m/8, Tp=25°c, p= 1 atm D=25mm, To = 100c at T = (25+273) + Cloot273) 2 335.5k, W = 19.31X106...

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