water from a reservoir flows at 0.85 m3/s through a rigid pipe 1200 mm diameter and completely stopped by a closure of a valve almost instantly. Bulk modulus of water is 2.20 x 109 N/m2. a) Find the water hammer pressure for sudden closure. b) Find the discharge if water hammer pressure is 700 KPa. c) If the time of closure of valve is 4 sec. and located at 650 mm from the reservoir, find the water hammer pressure at flow rate at 0.85 m3/s.

Water flows from a tank through a 23 cm diameter steel pipe. Determine (a) the discharge of water, (b) the distance from the inlet that ensures flow can be fully developed, and (c) the maximum flow velocity at the pipe center.

2. A nozzle 3 m long has a diameter of 1.3 m at the upstream end and reduces linearly to 0.45 m diameter at the exit. A constant flow rate of 0.12 m /sec is maintained through the nozzle. Find the acceleration at the midpoint of the nozzle. Hint: velocity at any point is equal to the flow rate divided by the area of the pipe at that point. [Ans. a=0.02579 m/s/s] 3. Water accelerates in an upward sloping pipe at a rate of 1.5 m/s?. The pipe slope is set at 40 degrees and has a length of 6 m. If the pressure is 63 kPa at section 1, what will be the pressure at section 2? [Ans. P2=16165.52 Pa] 1

A reservoir is fitted with a pump discharging into the open air at point B. The pressure at section A is considered to be under a vacuum of 10 inHg ad the discharge rate is given at 3 ft/sec. Determine the total head for this system with the datum elevation at the base of the reservoir. 10-in-diameter 8-in-diameter suction pipe discharge pipe 40 ft Pump 15 ft 25 ft O 81.15 ft O 92.45 ft O 71.33 ft O 120.71 ft

Problem 7 -75 A tube 15 m long is to connect two large tanks whose difference in water level is 2 m. The fube is to carry 5L/s of flow. What minimum size of tube is necessary to assure laminar flow condition? Ans: 55 mm

A pump draws water from reservoir A and lifts it to reservoir B as showm, The head los from reservoir A to pipe 1 is 3 times its velocity head and the head loss for pipe 2 to reservoir B is 20 times the velocity head. When the discharge is 20 L/s a) Compute the horsepower output of the pump in kW b) Compute the pressure head at pipe 1 c) Compute the pressure head at pipe 2 EL Om pipe 1 150 mm pipe 2 100 mm -EL-20 m EL 240 m

Situation 7: From reservoir A whose water surface elevation is 225 m. Water is pumped through a 350 mm pipe across a valley at a second reservoir B at a elevation of 240 m. During pump, the pressure is 570 kPa at a point C and at elevation of 195 m. Assume that the headloss in the pipe from reservoir A to point C is 30 times its velocity head and from point C to reservoir B is 50 times its velocity head 23. Compute the discharge in the pipeline in L/s 24. Compute the head added by the pump 25. Compute the horsepower exerted by the pump IVA E1225 m El 240 m El 195 m

A 30 cm diameter pipe is connected by a reducer to a 10 cm diameter pipe. Points 1 (on the 30 cm diam.) and 2 (on the 10 cm diam.) are along the same elevation. The pressure at 1 is 250 KPa. The flow is 50 liters per second and the energy lost between 1 and 2 is equivalent to 20 KPa. Compute the pressure at 2 if the liquid flowing has a specific gravity of 1.30.

The pipe connection shown has a series parallel connection. The rate of flow in the pipe 1 is 300 liters per sec. Assuming equal values of f = 0.02 for all pipes. Compute the discharge of pipeline 2 in cu.m per sec. Compute the discharge of pipeline 3 in cu.m per sec. Compute the discharge of pipeline 4 in cu.m per sec.

1. For the frictionless syphon shown, determine the discharge and the pressure heads at A and B. Consider a pipe diameter of 200 mm with the nozzle at the exit having 150 mm diameter. Consider a datum plane that 2.44 m is 0.85 meters below point 2. 1 1.22 m B 0.15 m