Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 16, Problem 16.6PP
Figure 16.13 O shows a free stream of water at
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a pump is delivering 160 liters per sec of water using an impeller diameter of 240 mm and operating at a speed of 1800 rpm. if the speed held constant and the impeller diameter is change to 203.2 mm, what is the new dischange og the pump in liters per second
5. A pump draws water from reservoir A and lifts it to reservoir B. The loss of head from A to 1 is three times
the velocity head in the 150mm pipe and the loss of head from 2 to B is twenty times the velocity head in the
100mm pipe. Discharge is 20L/s.
a. Calculate the horsepower output of the pump in kw.
b. Calculate the pressure head at 1 in meters.
c. Calculate the pressure head at 2 in meters.
B
El.240 m
----
El. Om
1
El. -20m
150mm
100 mm
A water jet with a flow rate of 2.83 m3 / s is traveling at 6 m / s in the positive x direction. The cost of the current striking a stationary splitter is correct about a 45 aç angle, other company are deflected downwards by the same angle and the final velocities of the two streams are 6 m / s. By neglecting the gravity, the separator is in place against the force applied by the water. calculate the x- and z- power of what is required to hold it. For water ? = 1.184 kg / m3
Chapter 16 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 16 - Calculate the force required to hold a flat plate...Ch. 16 - What must be the velocity of flow of water from a...Ch. 16 - Calculate the force exerted on a stationary curved...Ch. 16 - A highway sign is being designed to withstand...Ch. 16 - Compute the forces in the vertical and horizontal...Ch. 16 - Figure 16.13 O shows a free stream of water at 180...Ch. 16 - Compute the horizontal and vertical forces exerted...Ch. 16 - In a plant where hemispherical cup-shaped parts...Ch. 16 - A stream of non-flammable oil (sg 5 0.90) is...Ch. 16 - A 2 -in-diameter stream of water having a velocity...
Ch. 16 - Figure 16.17 O represents a type of flowmeter in...Ch. 16 - Water is piped vertically from below a boat and...Ch. 16 - A 2 -in nozzle is attached to a hose with an...Ch. 16 - Seawater (sg 5 1.03) enters a heat exchanger...Ch. 16 - A reducer connects a standard 6 -in Schedule...Ch. 16 - Calculate the force on a elbow attached to an in...Ch. 16 - Calculate the force required to hold a 90 elbow in...Ch. 16 - Calculate the force required to hold a 180 close...Ch. 16 - A bend in a tube causes the flow to turn through...Ch. 16 - A vehicle is to be propelled by a jet of water...Ch. 16 - A part of an inspection system in a packaging...Ch. 16 - Shown in Fig. 16.20 is a small decorative wheel...Ch. 16 - For the wheel described in Problem 16.22. compute...Ch. 16 - A set of louvers deflects a stream of warm air...Ch. 16 - Prob. 16.25PPCh. 16 - Prob. 16.26PPCh. 16 - Figure 16.22 shows a device for clearing debris...Ch. 16 - Prob. 16.28PPCh. 16 - Figure 16.23 is a sketch of a turbine in which the...Ch. 16 - Repeat Problem 16.29 with the blade rotating as a...Ch. 16 - Repeat Problem 16.29, except with the blade...
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- 4. A centrifugal pump delivers water to a height of 22 metres at a speed of 800 r.p.m. The velocity of flow is constant at a speed of 2-0 m/s and the outlet vane anglc is 45°. If the pump discharges 225 litres of water per second, find the diameter of the impeller and width of the impcller at oudet. (Ans. 375 mm: 95 mm)arrow_forwardTwo geometrically similar pumps are running at the same speed of 1000 rpms One pump has impoller diameter of 300 mm and lift water at the rate of 0.02 m3 against a head of 15 m Determine the head and impeller diameter of the other pump to deliver half the discharge.arrow_forward1.)The velocity of the water at the entrance and exit of a pipe are 10 m/s and 3 m/s, respectively. The volume of water flowing inside the tube is 18000 m 3 . What is the kinetic energy of the water measured at the exit of the pipe?2. If the exit of the pipe in problem 1 is located at the ground level, what is the elevation of the pipe inlet if all the potential energy is converted to the kinetic energy in problem 1?arrow_forward
- Reservoir B 3. A pump draws water at 300 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is 20 times the velocity head in the 200 mm diameter and the head loss from 2 to B is 20 times the velocity head in the 150-mm diameter pipe. Assume your own reservoir B elevation then compute for the energy that must be supplied to the pump in kW if said appurtenance has an efficiency of 80%. Compute also the pressure at points 1 and 2. Z 150 mm Reservoir A 200 mm pipe Pump 4. The same venturi meter described in number 2 is used to measure the discharge for a length of pipeline that was suspected to have had water stolen through an illegal connection. Before said suspected illegal connection, a mercury difference of 350 mm was observed while a mercury difference of 200 mm was observed afterwards. Estimate the stolen volume of water per day. Elevation=-20 m Point 1 Point 2arrow_forward1. The attached figure shows a part of a fire protection system, where a pump drives water at 25 °C from a tank and takes it to point B at a rate of 0.095 m3/s. a) Calculate the height "h" that is required for the water level in the tank in order to maintain a pressure of 100 KPa. at point A. b) If we assume that the pressure in the point A is equal to 75 KPa, calculate the power transmitted by the pump to the water in order to maintain a pressure of 275 KPa at point B. Include the energy losses due to friction, but ignore the others. ..--- B Flujo Flujo 8 m Tuberia de PVC de 800 m de largo y de un diametro de 8 pulg A Tuberia de PVC de 15 m de largo y de un diametro de 10 pulg.arrow_forward4. A stream of water 75 mm in diameter discharges into the atmosphere at a velocity 24.4 m/s. Find the power in the jet using the datum plane through the center of the jet.arrow_forward
- If the velocity of flow in a 75-mm diameter fire hose is 0.5 m/s, what is the velocity in a diameter 25 mm of a jet issuing from a nozzle attached at the end of the pipe. Compute also the power available in the jet.arrow_forward3.1 A sharp-edged orifice of 12.5 mm in diameter has a coefficient of discharge of 0.6 and is situated in the base of a closed tank. At a given instant the head of water above the orifice is 1.8 m. The density of the water is 998 kg/m3. If the discharge of water is to be 90 kg/min at this instant, calculate against which pressure the air must be pumped in the tank above the water.arrow_forwardFind the force required to hold the blade in position, if the jet weight (100kg) and discharge (400l/sec).arrow_forward
- A stream of water, 3” in diameter, discharges into the atmosphere at a velocity 80.0 ft/sec. Find the horsepower in the jet using the datum plane through the center of the jet. Draw the figure.arrow_forwardThe discharge through an horizontal trapping is 0.06 m /s. The diameter at the inlet and outlet are 250 mm and 200 mm respectively. If the water enters the pipe at a pressure of 9.81 bar, calculate the outlet pressure. 1 2 2.arrow_forwardDraw the right diagram for the problem. Show complete solution. Water at 60 F from a lake through 500 ft if 4in ID cast iron pipe at a water turbine 250 ft below the surface of the lake. After flowing from the turbine, the water is discharged into the atmosphere through a horizontal 50 ft section of the same pipe. The turbine power output is 10hp when the water in the discharged pipe is flowing at 5 ft/s. a. What is the turbine efficiency defined as the actual power output of the turbine divided by the power output that would be withdrawn if there are no friction within the turbine? b. If the turbine were by passed, what would be the flow rate of water through the 500 ft of 4in pipe?arrow_forward
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