Q1) I. Explain with the help of specific energy diagram about two types of flows that are possible in a given channel at

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Q1 I Explain With The Help Of Specific Energy Diagram About Two Types Of Flows That Are Possible In A Given Channel At 1 (239.36 KiB) Viewed 31 times

Q1) I. Explain with the help of specific energy diagram about two types of flows that are possible in a given channel at constant discharge. And comment on the flow condition when the specific energy is minimum. II. A rectangular channel 25 m wide has a bed slope of 1:1200 and ends in a free outfall. If the channel carries a flow rate of 20 m3/s, and has a Manning's roughness coefficient of 0.014, how far from the outlet is the depth equal to 99% of normal depth. Use four equal depth steps in the calculations? Q2) 1. Explain the difference between fetch limited and duration limited wave formation. II. A vertical steel cylinder 3.8 m in diameter constitutes one leg of a small offshore structure. Calculate the maximum likely drag and inertia forces due to a deep-sea wave of height 6.0 m with a wave period of 8 sec. Assume that the Reynolds number is less than 5x105. III. Estimate volumetric bed load transport rate using Shields bed load equation, if flow through a rectangular channel is 25 m3/s. The channel slopes at 1 in 2500, has a Manning's n value of 0.035, and a bed width of 30 m. The channel boundary is made of fine-gravel with specific gravity of 2.65 and average size of 2 mm. Assume that the Shield's parameter 0.056. =