Unformatted text preview: Fr1 ( 15) for various S0 ( 0.3).
At the bottom of an 80ftwide spillway is a horizontal
hydraulic jump with water depths 1 ft upstream and 10
ft downstream. Estimate (a) the flow rate and (b) the
horsepower dissipated.
Water in a horizontal channel accelerates smoothly over
a bump and then undergoes a hydraulic jump, as in Fig.
P10.93. If y1 1 m and y3 40 cm, estimate (a) V1, (b)
V3, (c) y4, and (d ) the bump height h. P10.84
depth, (c) Froude number, and (d ) percent dissipation.
Neglect the effect of the nonhorizontal bottom (see Prob.
10.91).
A bore is a hydraulic jump which propagates upstream
into a still or slowermoving fluid, as in Fig. 10.4a. Suppose that the still water is 2 m deep and the water behind
the bore is 3 m deep. Estimate (a) the propagation speed
of the bore and (b) the induced water velocity.
A tidal bore may occur when the ocean tide enters an estuary against an oncoming river discharge, such as on the
Severn River in England. Suppose that the tidal bore is
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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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