Question

Figure 2. Pipes that connect Reservoirs A and B. /20 3. 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 5,000 m, a Hazen-Williams C' factor of 100, and an inner diameter of 1,167 mm. The upstream reservoir has a water level of 105 m. The valve discharge constant is Es 0.35 m31 where Q discharge (m/s), Es-valve discharge constant (m32Is), Hu/s upstream head, Hd/s downstream head. a) When the valve is partially closed, a steady state discharge of 0.92 mls generates a headloss of 6 m across the valve. Given this data, compute the t- value of the partially-closed valve. b) For the steady state discharge and T-value computed in a), compute the water level in the downstream reservoir c) When the valve is closed further, the r value is lowered to T 0.3. If the water level in the downstream reservoir remains fixed at the level computed in b), compute the discharge in the transmission pipeline. Upstream Reservoir Downstream Reservoir Valve h = 105 m 4,000 m -1,000 m

Answer 1

1.862, 1 、 0·92 .87- 6m valve wałer lerel 'in ResevVo' (H 105- lo, 26y

0.3 g 0.3 x 0.35% -/ 10.26 y