Fox and McDonald's Introduction to Fluid Mechanics
9th Edition
ISBN: 9781118912652
Author: Philip J. Pritchard, John W. Mitchell
Publisher: WILEY
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Chapter 10, Problem 7P
This blade is one of a series. What force is required to move the series horizontally against the direction of the jet of water at a velocity of 15 m/s? What power is required to accomplish this motion?
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Chapter 10 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
Ch. 10 - The geometry of a centrifugal water pump is r1 =...Ch. 10 - Find the resulting -groups when (a) D, , and Q or...Ch. 10 - Consider the centrifugal pump impeller dimensions...Ch. 10 - Dimensions of a centrifugal pump impeller areCh. 10 - Dimensions of a centrifugal pump impeller areCh. 10 - The blade is one of a series. Calculate the force...Ch. 10 - This blade is one of a series. What force is...Ch. 10 - A centrifugal water pump, with 15-cm-diameter...Ch. 10 - A centrifugal water pump designed to operate at...Ch. 10 - A series of blades, such as in Example 10.13,...
Ch. 10 - In passing through this blade system, the absolute...Ch. 10 - A centrifugal pump runs at 1750 rpm while pumping...Ch. 10 - A centrifugal water pump designed to operate at...Ch. 10 - Kerosene is pumped by a centrifugal pump. When the...Ch. 10 - In the water pump of Problem 10.8, the pump casing...Ch. 10 - Use data from Appendix C to choose points from the...Ch. 10 - Data from tests of a water suction pump operated...Ch. 10 - A centrifugal pump impeller having r1 = 50 mm, r2...Ch. 10 - A centrifugal pump impeller having dimensions and...Ch. 10 - An axial-flow fan operates in sea-level air at...Ch. 10 - Data measured during tests of a centrifugal pump...Ch. 10 - A small centrifugal pump, when tested at N = 2875...Ch. 10 - If the impeller of Problem 10.20 rotates between...Ch. 10 - At the outlet of a pump impeller of diameter 0.6 m...Ch. 10 - Typical performance curves for a centrifugal pump,...Ch. 10 - A pump with D = 500 mm delivers Q = 0.725 m3/s of...Ch. 10 - At its best efficiency point ( = 0.87), a...Ch. 10 - Using the performance curves in Appendix C, select...Ch. 10 - A pumping system must be specified for a lift...Ch. 10 - A centrifugal water pump operates at 1750 rpm; the...Ch. 10 - A set of eight 30-kW motor-pump units is used to...Ch. 10 - A blower has a rotor with 12-in. outside diameter...Ch. 10 - A centrifugal water pump has an impeller with an...Ch. 10 - Appendix C contains area bound curves for pump...Ch. 10 - Use data from Appendix C to verify the similarity...Ch. 10 - A centrifugal water pump has an impeller with...Ch. 10 - Catalog data for a centrifugal water pump at...Ch. 10 - A 1/3 scale model of a centrifugal water pump...Ch. 10 - Sometimes the variation of water viscosity with...Ch. 10 - A large deep fryer at a snack-food plant contains...Ch. 10 - Data from tests of a pump, with a...Ch. 10 - A four-stage boiler feed pump has suction and...Ch. 10 - A centrifugal pump operating at N = 2265 rpm lifts...Ch. 10 - A centrifugal pump is installed in a piping system...Ch. 10 - Part of the water supply for the South Rim of...Ch. 10 - Consider the flow system shown in Problem 8.94....Ch. 10 - Afire nozzle is supplied through 300 ft of...Ch. 10 - Performance data for a centrifugal fan of 3-ft...Ch. 10 - The performance data of Problem 10.57 are for a...Ch. 10 - Experimental test data for an aircraft engine fuel...Ch. 10 - Preliminary calculations for a hydroelectric power...Ch. 10 - Conditions at the inlet to the nozzle of a Pelton...Ch. 10 - A Francis turbine is to operate under a head of 46...Ch. 10 - A Kaplan (propeller with variable-pitch blades)...Ch. 10 - Francis turbine Units 19, 20, and 21, installed at...Ch. 10 - Measured data for performance of the reaction...Ch. 10 - For a flow rate of 12 L/s and turbine speed of 65...Ch. 10 - The velocity of the water jet driving this impulse...Ch. 10 - An impulse turbine is to develop 15 MW from a...Ch. 10 - An impulse turbine under a net head of 33 ft was...Ch. 10 - The absolute velocities and directions of the jets...Ch. 10 - A fanboat in the Florida Everglades is powered by...Ch. 10 - A jet-propelled aircraft traveling at 225 m/s...Ch. 10 - When an air jet of 1-in.-diameter strikes a series...Ch. 10 - The volume flow rate through the propeller of an...Ch. 10 - A typical American multi blade farm windmill has D...Ch. 10 - An airplane flies at 200 km/h through still air of...Ch. 10 - This ducted propeller unit drives a ship through...Ch. 10 - A model of an American multi blade farm windmill...Ch. 10 - A large Darrieus vertical axis wind turbine was...Ch. 10 - Show that this ducted propeller system when moving...Ch. 10 - This ducted propeller unit (now operating as a...Ch. 10 - What is the maximum power that can be expected...Ch. 10 - If an ideal windmill is operating at best...Ch. 10 - A prototype air compressor with a compression...Ch. 10 - Prob. 89PCh. 10 - We have seen many examples in Chapter 7 of...
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- b) Figure Q3 shows a vehicle uses water scooping to slow down. The scoop is 3-m wide. Draw the free body diagram of the scoop. Determine the amount of force exerted on the scoop. If the force exerted by the flow to the scoop is 460 kN, determine the velocity of the vehicle. The vehicle scoops off 10 cm of water.arrow_forwardPUMP DISCHARGES 150 LITERS PER SECOND OF WATER TO A HEIGHTOF 80 METERS. IF THE EFFICIENCY IS 80% AND THE SPEED OF THE PUMP IS 1800 RPM, WHAT IS THE TORQUE IN N-M TO WHICH THE DRIVE SHAFT IS SUBJECTED?arrow_forwardIf the absolute velocity of the blade is 70 fps; the velocity of the water relative to the blade is 100 fps and the angle between them is 60°, determine the angle (in degrees)between absolute velocities (i.e. of the water and the blade).arrow_forward
- Obtain the slippery velocity using the two methods of center rotation and radius rotation.arrow_forwardA jet of water, having a velocity of 15 m/s, strikes a curved vane which is moving with a velocity of 6 m/s in the same direction as that of the jet at inlet. The vane is so shaped that the jet is deflected through 135°. The diameter of the jet is 150 mm. Assuming the vane to be smooth, find: (i) the force exerted by the jet on the vane in the direction of motion, (ii) power of the vane, and (iii) efficiency of the vane. [Ans. (i) 2443.5 N, (ii) 14.65 kW, (iii) 49.16%]arrow_forwardA jet engine on an airplane moving at 950 km/hr has an exit area of 0.5 m². If gas exiting the engine has a speed of 1950 km/hr (relative to the jet engine) and a density of 0.5 kg/m3, how much thrust does the engine produce? If the airplane has 2 identical engines (producing the same thrust) what is the total thrust produced by this aircraft?arrow_forward
- A jet of water strikes a stationary curved plate at one end at an angle of 30°. The jet of 75 mm diameter has a velocity of 30 m/s. The jet is deflected at an angle of 160° with respect to the horizontal. Determine the magnitude and direction of the force exerted by the water on the plate. Assume an ideal fluid. (Express Area in m2; Velocity in m/s; Discharge in m3/s and Force in N) The volumetric flow rate is:arrow_forwardShow that the force exerted by a liquid jet on a stationary nozzle as it leaves with a velocity V is proportional to V2 or, alternatively, to m.2. Assume the jet stream is perpendicular to the incoming liquid flow line.arrow_forwardAssume that 87 kg of fuel are burned by a rocket per second. If the exhaust gases have a speed of 2.8 x 103 m/s, what is the thrust in N on the rocket?arrow_forward
- A twin-engine aircraft is climbing at a 10-degree angle, measured from the vertical, at 260ft/s. The thrust developed by an engine is 1000 lb. Calculate the power developed by the whole aircraftarrow_forwardA 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 / m3arrow_forward3-56. A 2-in. Younded orifice exists in the horizontal bottom of a large tank. The water in the tank is 12 ft deep. Find the discharge through the orifice and the velocity in the jet 6 ft below the orifice. Cc = 1.0arrow_forward
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