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Unformatted text preview: ssuming uniform flow and the rockfriction
correlation of Eq. (10.15b), estimate (a) the flow rate if
the depth is 2 m and (b) the depth if the flow rate is Textbook Table of Contents  Study Guide 698 Chapter 10 OpenChannel Flow P10.27 P10.28 15 m3/s. (c) In part (a) what is the equivalent value of
Manning’s roughness factor n for the same flow rate?
Does your result agree with Table 10.1?
A circular unfinishedcement water channel has a slope
of 1:600 and a diameter of 5 ft. Estimate the normal discharge in gal/min for which the average wall shear stress
is 0.15 lbf/ft2, and compare your result to the maximum
possible discharge for this channel.
Show that, for any straight prismatic channel in uniform
flow, the average wall shear stress is given by ( P10.31 P10.35 If you happen to spot this result early, you can use it in
solving Prob. 10.27.
Suppose that the trapezoidal channel of Fig. P10.17 contains sand and silt which we wish not to erode. According to an empirical correlation by A. Shields in 1936, the
average wall shear stress crit required to er...
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This note was uploaded on 10/27/2009 for the course MAE 101a taught by Professor Sakar during the Spring '08 term at UCSD.
 Spring '08
 Sakar

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