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Unformatted text preview: 0.470 0.461 0.456 Cdbg1/2 H1 Cd where
αα 2m 0.63 V2
1
2g and kh 3/2 kh
0.3 mm The term kh is a lowhead loss factor. Suppose that the
weir is 3 m wide and has a crest height Y 50 cm. If
the water depth upstream is 65 cm, estimate the flow rate
in gal/min.
Hydraulic
jump H1
Flow H2 1:2 slope 1:5 slope Y P10.122 The Crump weir [19, chap. 4] 0.452 *P10.123 The Crump weir calibration in Prob. 10.122 is for modular flow, i.e., when the flow rate is independent of downDetermine if these data can be correlated with the
stream tailwater. When the weir becomes drowned, the
Reynolds and Weber numbers visàvis Eq. (10.61). If
flow rate decreases by the following factor:
not, suggest another correlation.  v v P10.120 The rectangular channel in Fig. P10.120 contains a Vnotch weir as shown. The intent is to meter flow rates
between 2.0 and 6.0 m3/s with an upstream hook gage
set to measure water depths between 2.0 and 2.75 m.
What are the most appropriate values for the notch height
Y and the notc...
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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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