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A transmission pipeline that conveys water from an upstream reservoir to a downstream reservoir is indicated below The transmission main has a valve along its length that controls the discharge in

A transmission pipeline that conveys water from an upstream reservoir to a downstream reservoir is indicated below. The transmission main has a valve along its length that controls the discharge in the system. The discharge through the valve is computed with the valve equation below. The pipeline has a length of 4,500 m, a Hazen-Williams 'C' factor of 110, and an inner diameter of 450 mm. The upstream reservoir has a water level of 105 m. The valve discharge constant is Es = 0.33 m^5/2 /s. where Q = discharge (m3/s), Es = valve discharge constant (m^5/2/s),Hu/s = upstream head, Hd/s = downstream head. a) When the valve is partially closed (T-value is equal to 0.75), calculate the hydraulic grade line in the downstream reservoir. b) When the valve is closed further, the T value is lowered to T = 0.22. If the water level in the downstream reservoir remains fixed at the level computed in b), compute the discharge in the transmission pipelinee the discharge in the transmission pipeline.

Apr 27 2020 View more View Less

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