Fluid Mechanics Fundamentals And Applications
3rd Edition
ISBN: 9780073380322
Author: Yunus Cengel, John Cimbala
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 5, Problem 83P
Water flows at a rate of 0.035 m3/s in a horizontal pipe rho diameter is reduced from 15 cm to 8 cm by a reducer. If the pressure at the centerline is measured to be 4S0 kPa and 445 kPa before and after the reducer, respectively, determine the irreversible head loss in the reducer. Take the kinetic energy correction factors to be 1.05.
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A horizontal pipe has an abrupt expansion from D1 = 8 cm to D2 = 16 cm. The water velocity in the smaller section is 10 m/s and the flow is turbulent. The pressure in the smaller section is P1 = 410 kPa. Taking the kinetic energy correction factor to be 1.06 at both the inlet and the outlet, determine the downstream pressure P2, and estimate the error that would have occurred if Bernoulli’s equation had been used.
Water from a reservoir is pumped over a hill through a
pipe 30 cm in diameter, and a pressure of 250 KPa is
maintained at the summit where the pipe is 100 m above
the reservoir. The quantity pumped is O. 20 m/s and by
reason of friction there is a head loss of 15 J/N between
reservoir and summit. If the pump is 80% efficient and
its motor is 90% efficient, determine the input power of
the pump
Solve correctly please.
(Gpt/Ai wrong answer not allowed)
Chapter 5 Solutions
Fluid Mechanics Fundamentals And Applications
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