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A vertical sluice gate in a long rectangular channel 5 m wide is lowered to produce...

A vertical sluice gate in a long rectangular channel 5 m wide is lowered to produce an
opening of 1.0 m. Assuming that free flow conditions exist at the vena contracta downstream
of the gate verify that the flow in the vena contracta is supercritical when the discharge
is 15 m3/s, and determine the depth just upstream of the gate. Cv = 0.98; Cc = 0.6.
Take the upstream velocity energy coefficient (Coriolis) to be 1.0 and that at the vena
contracta to be 1.2.

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