Q 5 A Sluice Gate Is Lowered Into A Wide Channel Carrying A Discharge Per Of 0 9 M S Meter Width The Bed Of The Channel 1 (93.14 KiB) Viewed 58 times
Q 5 A Sluice Gate Is Lowered Into A Wide Channel Carrying A Discharge Per Of 0 9 M S Meter Width The Bed Of The Channel 2 (219.42 KiB) Viewed 58 times
Q.5 A sluice gate is lowered into a wide channel carrying a discharge per of 0.9 m³s meter width. The bed of the channel is coarse gravel with particle diameter 60 mm and density 2650 kg m³. The critical Shields parameter is 0.056 and the bed friction the bed of the channel under the sluice is horizontal and the depth of flow just coefficient is 0.01. The particles of gravel have settling velocity 1.1 ms -1. Initially upstream of the gate is 2.5 m. a) Show that the bed is stationary upstream of the gate. b) Determine the initial water depth just downstream of the gate. Show that the bed is mobile here. c) Assuming that the downstream water level is set by the gate and the discharge remains constant, find the final depth of scour and the final depths of flow upstream and downstream of the gate. d) Establish whether suspended load is likely to make any contribution to the initial scour. (CLO-4, PLO-1) 12 mi y shown in fig.1 carries a flow of 25 m³s 10 mark
Q.5 A sluice gate is lowered into a wide channel carrying a discharge of 0.9 m³ s-1 per 12 me meter width. The bed of the channel is coarse gravel with particle diameter 60 mm and density 2650 kg m³. The critical Shields parameter is 0.056 and the bed friction coefficient is 0.01. The particles of gravel have settling velocity 1.1 m s -¹. Initially the bed of the channel under the sluice is horizontal and the depth of flow just upstream of the gate is 2.5 m. a) Show that the bed is stationary upstream of the gate. b) Determine the initial water depth just downstream of the gate. Show that the bed is mobile here. c) Assuming that the downstream water level is set by the gate and the discharge remains constant, find the final depth of scour and the final depths of flow upstream and downstream of the gate. d) Establish whether suspended load is likely to make any contribution to the initial scour. (CLO-4, PLO-1) in fig 1 ca a flo of 25 m³ s
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