Question 6.23: A gate in a trapezoidal channel with b = 12 ft and m = 1.0 h...
A gate in a trapezoidal channel with b = 12 ft and m = 1.0 has been set so as to produce a depth of Y_{o1} = 10 ft upstream from it and Y_{o2} = 4 ft downstream from it for a long time. Suddenly, the gate is lowered so as to cause the depth immediately downstream from it to be Y_{2} = 2.0 ft. Solve the resulting unsteady flow upstream and downstream from the gate.
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