Chapt10

# Suppose that the tidal bore is 10 ft deep and

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Unformatted text preview: ft deep and propagates at 13 mi/h upstream into a river which is 7 ft deep. Estimate the river current in kn. At one point in a rectangular channel 7 ft wide, the depth is 2 ft and the flow rate is 200 ft3/s. If a hydraulic jump occurs nearby, determine (a) whether it is upstream or downstream of this point and (b) the percentage of dissipation in the jump. Water 30 cm deep is in uniform flow down a 1° unfinished-concrete slope when a hydraulic jump occurs, as in Fig. P10.89. If the channel is very wide, estimate the water depth y2 downstream of the jump. [(1 P10.93 1 4 2 Jump 3 h P10.93 P10.94 P10.95 y2? Modify Prob. 10.93 as follows. Let the bump height be 20 cm and the subcritical approach velocity be V1 1.5 m/s. Determine (a) y2, (b) the supercritical flow V3, and (c) y4. A 10-cm-high bump in a wide horizontal water channel creates a hydraulic jump just upstream and the flow pattern in Fig. P10.95. Neglecting losses except in the jump, for the case y3 30 cm, estimate (a) V4, (b)...
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