If the outlet is drowned as in fig 1010c there is

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Unformatted text preview: Fr1 ( 15) for various S0 ( 0.3). At the bottom of an 80-ft-wide 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 slower-moving 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 10...
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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.

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