An open cylindrical vessel, 3m high and 1.5m in diameter is filled with water to a depth 2.5m.  In its side is a 50mm circular orifice C = 0.60 placed 300mm above the bottom of the vessel.  The vessel is rotated about its own axis at 60rpm and the water allowed to escape through the orifice for a period of 3 minutes.  Determine the volume (V) of water allowed to escape through the orifice in cubic meters

subject: hydraulics engineering

Problem No. 7 Two vertical cylindrical tanks 1 and 2 having diameters of 3m and 3m respectively, are connected with a 200mm -diameter tube at its lower portion, having C=0.60. When the tube is closed, the water surface at tank 1 is 5m above tank 2. How long will take after opening the tube, for the water surface in tank 2 to rise by 1m? 2m dia 3m dia V1 V 5m H2 1m tank 1 tank 2

Q-2 Water flows through a vertical contraction (venturi) section. Piezometers are attached to the upstream pipe and minimum area section as shown. The velocity in the pipe is 3 m/s. The difference in elevation between the two water levels in the piezometers is 15 cm. What is the velocity at the minimum area? 15 cm 3 m/s

Props of fluids.

2. A cylindrical tank 1.5 m diameter is filled with water at 2.5 m high. What size ol orifice must be installed at the bottom such that liquid surface draws down at the rate of 50 mm/s. C = 0.60. (5 pts.) 3. An irrigation pump delivers water through a 6- inches horizontal pipe flowing full at the outlet, the jet striking the ground at a horizontal distance of 12 ft. and a vertical distance of 4 ft. from the end of the pipe. Find the capacity of the pump in gallons per minute. (5 pts.) 4. A diverging tube discharges water from a reservoir at a depth of 10 m below the water surface. The diameter of the tube gradually increases from 150 mm at the throat to 225 mm at the outlet as shown in the figure. Use coefficient of discharge and coefficient of velocity is equal to 1. (10 pts.) Water 10 m 225 mm o Neglecting friction, determine the maximum possible rate of discharge through this tube. a. ling pressure at the throat.

Q4: A tank of water empties by gravity through a horizontal pipe into another tank in figure (1) .There is a sudden enlargement in the pipe as shown.At a certain time the difference in levels is 3m.Each pipe is 5m long and has a friction coefficient Cf-0.007 The inlet loss constant is K=0.5 and bore diameter in point A 20mm ,and bore diameter in point B 60mm.Calculate this point. the volume flow rate at Calculate the volume flow rate at this point. (1) 20 mm bore diameter 3 m 60 mm bore diameter (2)

5. Determine the rise in pressure in the impeller of a centrifugal pump through which water is flowing at the rate of 0.01 m3/s. The internal and external diameters of the impeller are 15 cm and 30 cm, respectively. The widths of the impeller at inlet and outlet are 1.2 cm and 0.6 cm, respectively. The pump is running at a speed of 1500 r.p.m. The water enters the impeller radially at inlet and impeller vane angle at outlet is 45°. Neglect losses through the impeller.