A circular water pipe has an abrupt expansion from diameter D 1 = 8 cm to D

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A circular water pipe has an abrupt expansion from diameter D1= 8 cm to D2= 24 cm. The pressure and the average water velocity in the smaller pipe are P1= 135 kPa and 10 m/s, respectively, and the flow is turbulent. By applying the continuity, momentum, and energy equations and disregarding the effects of the kinetic energy and momentumflux correction factors, show that the loss coefficient for sudden expansion is KL= (1 - D12/D22)2, and calculate KLand P2for the given case.

D2 V= 10 m/s

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Fundamentals of Thermal-Fluid Sciences

ISBN: 978-0078027680

5th edition

Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala

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