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Unformatted text preview: ccuracy is achieved for x
100 m. The complete solution curve
is shown in Fig. E10.10b. The desired solution value is
At x  v v 694  2000 m: eText Main Menu y  5.00 m Textbook Table of Contents Ans.  Study Guide Problems 695 6
5.59 M – 1 Solution curve
5
4
y, m y ≈ 5.00 m at x = –2000 m 4.0
Weir yn = 3.20 m 3 2
yc = 1.13 m 1
0
– 2000 – 1500 E10.10b – 1000
x, m – 500 0 Thus, even 2 km upstream, the dam has produced a “backwater” which is 1.8 m above the normal depth which would occur without a dam. For this example, a nearnormal depth of, say,
10 cm greater than yn, or y 3.3 m, would not be achieved until x
13,400 m. Backwater
curves are quite farreaching upstream, especially in flood stages. Summary This chapter is an introduction to openchannel flow analysis, limited to steady, onedimensionalflow conditions. The basic analysis combines the continuity equation with
the extended Bernoulli equation including friction losses.
Openchannel flows are classified either by depth variation or by Froude number,
the latter being analogou...
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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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