Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 7, Problem 7.34PP
For the system shown in Fig. 7.35 and analyzed in Problem 7.33, assume that the energy loss is proportional to the velocity head in the tubing. Compute the pressure in the tank required to cause a flow of
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Chapter 7 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 7 - A horizontal pipe carries oil with a specific...Ch. 7 - Water at 40 F is flowing downward through the...Ch. 7 - Find the volume flow rate of water exiting from...Ch. 7 - A long DN 150 Schedule 40 steel pipe discharges...Ch. 7 - Figure 7.14 shows a setup to determine the energy...Ch. 7 - A test setup to determine the energy loss as water...Ch. 7 - The setup shown in Fig. 7.16 is being used to...Ch. 7 - A pump is being used to transfer water from an...Ch. 7 - In Problem 7.815 (Fig. 7.17), if the left-hand...Ch. 7 - A commercially available sump pump is capable of...
Ch. 7 - A submersible deep-well pump delivers 745 gal/h of...Ch. 7 - In a pump test the suction pressure at the pump...Ch. 7 - The pump shown in Fig. 7.19 is delivering...Ch. 7 - The pump in Fig. 7.20 delivers water from the...Ch. 7 - Repeat Problem 7.14, but assume that the level of...Ch. 7 - Figure 7.21 shows a pump delivering 840L/min of...Ch. 7 - Figure 7.22 shows a submersible pump being used to...Ch. 7 - Figure 7.23 shows a small pump in an automatic...Ch. 7 - The water being pumped in the system shown in Fig....Ch. 7 - A manufacturer's rating for a gear pump states...Ch. 7 - The specifications for an automobile fuel pump...Ch. 7 - Figure 7.26 shows the arrangement of a circuit for...Ch. 7 - Calculate the power delivered to the hydraulic...Ch. 7 - Water flows through the turbine shown in Fig....Ch. 7 - Calculate the power delivered by the oil to the...Ch. 7 - What hp must the pump shown in Fig. 7.30 deliver...Ch. 7 - If the pump in Problem 7.26 operates with an...Ch. 7 - The system shown in Fig. 7.31 delivers 600 L/min...Ch. 7 - Kerosene (sg = 0.823 ) flows at 0.060m3/s in the...Ch. 7 - Water at 60 F flows from a large reservoir through...Ch. 7 - Figure 7.34 shows a portion of a fire protection...Ch. 7 - For the conditions of Problem 7.31 and if we...Ch. 7 - In Fig. 7.35 kerosene at 25 F is flowing at 500...Ch. 7 - For the system shown in Fig. 7.35 and analyzed in...Ch. 7 - Compute the power removed from the fluid by the...Ch. 7 - Compute the pressure at point 2 at the pump inlet.Ch. 7 - Compute the pressure at point 3 at the pump...Ch. 7 - Compute the pressure at point 4 at the press...Ch. 7 - Compute the pressure at point 5 at the press...Ch. 7 - Evaluate the suitability of the sizes for the...Ch. 7 - The portable, pressurized fuel can shown in Fig....Ch. 7 - Professor Crocker is building a cabin on a...Ch. 7 - If Professor Crocker's pump, described in Problem...Ch. 7 - The test setup in Fig. 7.39 measures the pressure...Ch. 7 - If the fluid motor in Problem 7.44 has an...Ch. 7 - A village with a need for a simple irrigation...Ch. 7 - As a member of a development team for a new jet...Ch. 7 - A fire truck utilizes its engine to drive a pump...Ch. 7 - A home has a sump pump to handle ground water from...Ch. 7 - In Problem 6.107 an initial calculation was made...Ch. 7 - A creek runs through a certain part of a campus...Ch. 7 - A hot tub is to have 40 outlets that are each 8 mm...Ch. 7 - A large chipper/shredder is to be designed for use...
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- A pump is used in a building to lift water from a ground floor. The pump is pushing 60l/sec of water through a 0.1m diameter to above floor which is 5m high. Calculate the velocity by which the water exits the pipe if water enters the pump at 30kPa and exists with 5kPa. Figure 6 Water flow in a pipe If the average velocity in the pipe is 6m/s. what will major energy loss if the dynamic viscosity of water is 8.9 x 10-4s. Due to vibration and noise issue in a pipe the velocity of pump is decided to set at 2.5 m/s. What will new major energy? Calculate the minor energy loss if length of the pipe is 15m. use f = 0.03, = 1, = 0.9 Analyse the relationship between frictional energy loss under different gravitational flow conditionsarrow_forwardExample Problem The fluid being pumped is oil with a specific gravity of 0.86. Calculate the energy delivered by the pump to the oil per unit weight of oil flowing in the system. Energy losses in the system are caused by check valve and friction losses as the fluid flows through the piping. The magnitude of such losses has been determined to be 1.86 N.m/N. Pump system. The volume flow rate through the pump shown in figure below is 0.014 m³/s. SOLUTION: +EO PB = 296 kPa Schedule 40 (From Pipe Supplier's Table) Wall Flow Area ao NO ao Thickness DN 50 Schedule 40 (ww) 0.002163 steel pipe 60.3 3.91 52.48 88.9 5.49 77.92 0.004768 08 GENERAL ENERGY EQUATION BETWEEN POINTS A & B: Flow PA/y + Z, + v/2g +h- hg -h = PB/y+ ZB + Vp²/2g 1.0 m %3D Therefore, Ty + 87/(A -A) + ("z - "z ) + ^/(°d - d) = 'y DN 80 Schedule 40 %3D Check valve From continuity equation, v = Q/A, find VA & VB VA = ? steel pipe PA =-28 kPa %3D Vs = ? Pump CHECK ANSWER h =42.9 m, or 42.9 N.m/N %3D 5.arrow_forwardA pipe with a diameter of 350 mm in the inlet section, presented speed of 0.5 m/s, in the exit section the diameter is 70 mm, due to the attachment of a nozzle, the water comes out in a jet. Calculate the pressure inside the piping, considering ideal fluid and steady statearrow_forward
- Imagine the plug in the sink described in Problem 8.31 leaks. If it now takes 45 seconds to fill the sink to its rim, estimate the volumetric flow rate of the leak.arrow_forwardWater at 40°F is flowing downward through the fabri- cated reducer shown in Fig. 7.11. At point A the velocity is 10 ft/s and the pressure is 60 psig. The energy loss be tween points A and B is 25 lb-ft/lb. Calculate the pressure at point B.arrow_forwarda. Solve for the two (2) atmospheric condition, Pn1 & Pn2 at 32.68 0C and 41.12 °C. b. Calculate the diameter of the pipe at suction side if the velocity of air flow is 22.82 m/s with flow rate of 2.96 m³ /second. c. Compute the velocity head at suction side if the velocity is 33.68 m/sec.arrow_forward
- 4. Maintenance work on high pressure hydraulic systems requires special precautions because even a small leak can lead to a high-speed jet of hydraulic fluid that can cause serious injuries. Calculate and plot the jet speed of a leak versus system pressure for pressures up to 40 MPa (gage).arrow_forward7. A large tank is partly filled with water, the air space above being under pressure. A 2" hose connected to the tank discharges on the roof of a building 50 ft above the level in the tank. The friction loss is 18 ft. What air pressure must be maintained in the tank to deliver 0.436 cfs on the roof ?arrow_forwardIf the velocity of flow in a 75 mm diameter fire hose is 0.5 m/s,what is the velocity in a 25 mm diameter jet issuing from anozzle attached at the end of the pipe.arrow_forward
- A large blower for a furnace delivers 47 000 ft/min (CFM) of air having a specific weight of 0.075 lb/ft³. Calculate the weight flow rate and mass flow rate.arrow_forwardCalculate the pressure required in the duct of Fig. 6.24 just ahead of the nozzle to produce a jet velocity of 75 ft / s. the fluid is water at 180 ° farrow_forwardItem#3 The oil tank for the hydraulic system of figure below is air-pressurized at 10psig. The inlet line to the pump is 10 ft below the oil level while point 3 is 2ft below pump inlet. The pump flow-rate is 30 gpm and has a power equal to0.5HP. Find the pressure at station 3if there is a 28ft head loss between station 1 and 3. OIL LEVEL SG 0.9 1.5-IN- INSIDE DIAMETER 10 FT STRAINER ELECTRIC MOTOR M 2 FT PUMP 3 Q-30 GPMarrow_forward
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