Water is drained from a large reservoir using two horizontal plastic pipes connected in series. The first pipe is 20 m long and has a 10-cm diameter while the second pipe is 35 m long and has a 4-cm diameter. The water level in the reservoir is 18 m above the centerline of the pipe. Given: Fitting Pipe entrance Pipe exit K values 0.5 0.46 Density of water is 1000 kg/m³, Dynamic viscosity (μ) of the water is 1.14x10-3 Pa·s, Surface roughness of the plastic pipe (ε) = 0 (smooth pipe) Determine a) the flow velocity of water in both pipes; and b) the discharge rate of water from the reservoir. 18 m Water tank 35 m 20 m

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As shown in the figure below, a cylindrical tank with a hole in the bottom and an air vent in the top is being filled with water. Given the following: Dtank = 4 ft hill = 8 ft NOG height of water in tank when tank is filled Qin = 10 gal/min %3D NOT UPL TO CHE diameter of hole Find: volumetric flowrate into tank EGG EXAM into the tank in slugs/second OT UPS XAM O NOT U EXAM (c) The rate at which the water level in the tank is mass flowrate (in slugs/second) of the water (b) The mass flowrate (in slugs/second) out of the tank UPLOAD TO CHE NOT UPLOAD when the water level reaches the fill height DO NOT UPL rising (in inches/minute) when the water level NOT UPL PLOAD TO CHEGG NOT UPLOAD TO CHEGG EXAM TO CHEGG EXAM OD TO CHEGG UP reaches the filled height то снE LOAD vent Dtank DO DO DO NOT UPLOADTO EXAM EX DO 0 DONOT UPLOA T Dhole G EXAM TO CNGO UPLOA hole mdotout

For the piping system of Fig. , all pipes are concretewith a roughness of 0.04 in. Neglecting minor losses, computethe overall pressure drop p1 - p2 in lbf/in2 ifQ =20 ft3/s. The fluid is water at 20°C.

The water is flowing through a pipe having diameters 30 cm and 21 cm at sections land 2 respectively. The rate of flow through pipe is 40 litres/s. The section 1 is 7 m above datum and section 2 is 3 m above datum. If the pressure at section 1 is 37 N/cm? , find the following by neglecting losses: (ENTER ONLY THE VALUES BY REFERRING THE UNIT GIVEN IN BRACKETS) ) Area of cross section of section1 (unit in m?) = Area of cross section of section2 (unit in m?) = velocity at section 1 (unit in m/s) = velocity at section 2 (unit in m/s) = (ii) difference in datum head (Unit in m) = Pressure head at section 1 (Unit in m) = pressure head at section 2 (unit in m) =

U - tube is used to pressure the difference in water channel. p1= 1000 kg/m3. The orange fluid in the U - tube has a density: p2= 2000 kg/m3. The height a = 10 cm and h = 15 cm. If the pressure at point ① is 111 kPa, what is the pressure at point ② ?

5. The large tank shown in the figure is filled with water to a height of ho. Water exits the 5-cm- diameter pipe at A and is collected in a tub at B. The tub is 2 m below the pipe exit. You may assume no viscous losses. Ро ho 0 A Control volume for part b 2 m B Figure for problem 5. 1. (a) It is required that the tub be filled at a volume flow rate of 0.028 m³/s. At what height, ho, must the tank be filled to achieve this flow rate if po = 50 kPa? (b) Using the control volume shown in the figure, show that the velocity in the horizontal direction remains constant as the water flows from A to B. (Hint: there is no force in the x-direction acting on the control volume.) (c) Find the angle, 0, at which the stream hits the tub. 0 Figure for part c).

A pipeline with roughness ks = 1.0mm and diameter D = 8.8cm connects two reservoirs. The reservoirs are both open to the atmosphere and differ in surface elevation by H = 40m. The two reservoirs with the connecting pipe are shown in the figure below. You can assume density of water = 1003kg/m³, dynamic viscosity of water = 0.001Pas and acceleration due to gravity 9.81m/s². Local losses must be considered; assume reasonable values as introduced in the ENGG2500 lectures. Reservoir 1 = Pipe with: D,K, m. H a) What is the friction factor of the pipe for a flow rate of Q =44L/s? Provide your answer to 3 decimal places. The friction factor f = = b) For this case, what is the length of the pipe? Provide your answer to 3 decimal places. The length is L Reservoir 2

A 100 m length of a smooth horizontal pipe is attached to a large reservoir. A attached to the end of the pipe to pump water into the reservoir at a volume flow rate of 0.01 m³/s. What pressure (gage) must the pump produce at the pipe to generate this flow rate? The inside diameter of the smooth pipe is 150mm. Dynamic Viscosity of water is 1*103 Kg/(m.s). K at the exit of the pipe is 1. pump 10 m D=150mm L= 100 m- Pump

Water flows through a 15m pipe with 1.3 cm diameter at 20 l/min. Determine the length of entrance region, le?