8.63 Two reservoir maintain a constant difference of water levels of 11.25 m and are connected by a 10 cm diameter pipeline of 294.3 m length. The total of all head losses, by friction valve losses, bend losses, inlet and exit losses, and velocity head can be taken as 98.1 v²/2g (in m) where v is the flow velocity through the pipe (in, m/sec). Assuming that the valve at the" downstream end is suddenly opened so that there is no pressure wave, what will be the time taken for the velocity of flow in the pipe to attain 95% of the steady terminal velocity? Take 1 0.102. 9.81

8.63 Two reservoir maintain a constant difference of water levels of 11.25 m and are connected by a 10 cm diameter pipeline of 294.3 m length. The total of all head losses, by friction valve losses, bend losses, inlet and exit losses, and velocity head can be taken as 98.1 v²/2g (in m) where v is the flow velocity through the pipe (in, m/sec). Assuming that the valve at the" downstream end is suddenly opened so that there is no pressure wave, what will be the time taken for the velocity of flow in the pipe to attain 95% of the steady terminal velocity? Take 1 0.102. 9.81

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

If the flow velocity in the 2nd pt. of a pipe is 1.2 m/s, find the a.) minor head loss (mm) between two pts. of a pipe. The 1st pt. has a diameter of 700 mm, the 2nd pt. has 210 mm. and b.) minor head loss (mm) in a valve connected to pt.2 having an L/D ratio of 27.
A reservoir A, the free water surface of which is at an elevation of 275 m, supplies water to reservoirs B and C with water surfaces at 180 m and 150 m elevation respectively. From A to junction D there is a common pipe 300 mm diameter and 16 km long. The pipe from D to B is 200 mm diameter and 9.5 km long while that from D to C is 150 mm diameter and 8 km long. Neglect losses other than pipe friction and taking f = 0.01 for all pipes. A. Calculate the rates of ﬂow at A in (m³/s) B. Calculate the rates of ﬂow at B in (m³/s) C. Calculate the rates of ﬂow at C in (m³/s)
A 170-m long pipeline, composed of two pipes connected in series, discharges freely at a point 40 m below the water level at intake. The pipe projects into the reservoir. The first 100 m is 25 cm in diameter, and the remaining 70 m is 15 cm in diameter. Assuming that f=0.05 for both pipes, (a) find the rate of flow. If the junction of the two sizes of pipe is 25 m below the intake water-surface level, find the pressure head just above C and just below C, where C denotes the point of junction. Assume a sudden contraction at C. Use k=0.8 for entrance, 0.24 for sudden contraction and 1.0 for exit. I will downvote the incorrect solution
Two water reservoirs of height h1 = 60 m and h2 = 30 m are connected by a pipe that is 0.35 m in diameter. The exit of the pipe is submerged at a distance of 8 m from the (2nd) reservoir surface. a. Provide a diagram b. Determine the flow rate through the pipe if the pipe is 80 m long and the (Fanning) friction factor f' = 0.004. The pipe inlet is set flush with the wall. c. If the relative roughness ε/D = 0.004, determine the friction factor and flow rate.
Water at 15°C (? = 999.1 kg/m3 and ? = 1.138 × 10−3 kg/m·s) is flowing steadily in a 30-m-long and 6-cm-diameter horizontal pipe made of stainless steel at a rate of 10 L/s. Determine (a) the pressure drop, (b) the head loss, and (c) the pumping power requirement to overcome this pressure drop.
A 1.20 m-diameter(internal)horizontal steel penstock conveys water at the rate of3.6 m3/s. The thickness of the pipe wall is 25 mm. Thebulk modulus of elasticity of water is 2.2 GPa. The pipehas length of 1000 m and the friction factor is 0.020. Thewater surface elevation in the reservoir is 60 m. If theflow is stopped completely by closing the valve in 2sec, determine the following:(a) the maximum water hammer pressure that candevelop.(b) the maximum pressure at the valve.(c) the elongation of the pipe in mm (△=ForcexL/AE) foran almost instantaneous closure.
An engineer is hired to design a swimming pool 15m long by 6m wide by 2m deep. For water supply, he decideds to lay 600m of 5cm pipe with f=0.020 from a nearby main to the pool. The pipe will discharge freely into the pool during the entire filling process. The average pressure at the water main is 550kpa and the difference in elevation between the two ends of the pipe is 10m, with the discharge end higher than the intake end. Assuming that 10% of the loss in the pipeline are due to transitions, fittings and valves, how long would it take to fill the swimming pool?
A horizontal pipe of 150 mm diameter for the initial 30 m and 75 mm dimeter for the remaining 10 m is connected to a water tank. The height of waler in tank is 15 m above the centre line of the pipe. Find out the flow rate through the pipe, taking all losses into the account. Consider the reduction in diameter of the pipe as sudden coefficient of friction for the pipe is 0.008.
As shown, water at 15 °C is flowing in a 15 cm–diameter by 60 m-long run of pipe that is situated horizontally. The mean velocity is 2.5 m/s, and the head loss is 1.5 m. Determine the pressure drop and the required pumping power to overcome head loss in the pipe.
Total head (energy) is constant along a pipe system and is 25 m. At Point B, the flow rate is 1.2 m3/s where the rectangular pipe has a height of .5 m and a width of .4 m. What is the static head at Point B, in m?
The total length of pipe connecting the two reservoirs is 100m. The pipe 250mm-diameter pipe delivers Q = 150 lit/sec of water. Hazen-Williams coefficient of the pipe is 120. If the difference in elevation of water surfaces at reservoir A and reservoir B is 147 meters;
Two pipes are connected in parallel between two reservoirs: L1= 2600 m, D1 = 1.3 m, C1 = 90; L2 = 2400 m, D2 = 0.9 m, C2 = 100. For a difference in elevation of 3.8 m, determine the total flow (i.e. total Q) of the water. [Answer in units of m3/s]