Concept explainers
Maintenance work on high-pressure hydraulic systems requires special precautions. A small leak can result in a high-speed jet of hydraulic fluid that can penetrate the skin and cause serious injury (therefore troubleshooters are cautioned to use a piece of paper or cardboard, not a finger, to search for leaks). Calculate and plot the jet speed of a leak versus system pressure, for pressures up to 40 MPa gage. Explain how a high-speed jet of hydraulic fluid can cause injury.
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
Additional Engineering Textbook Solutions
INTERNATIONAL EDITION---Engineering Mechanics: Statics, 14th edition (SI unit)
Mechanics of Materials (10th Edition)
Introduction To Finite Element Analysis And Design
Applied Fluid Mechanics (7th Edition)
Applied Statics and Strength of Materials (6th Edition)
Statics and Mechanics of Materials (5th Edition)
- Answer the problem correctly and provide complete and readable solutions. If you can explain the process (briefly), please do so. Thank you!arrow_forward4. A pump is used for the pumping of water from Tank A into Tank B in which the height difference between the surface levels of water is 20 m. The pipe diameter is 400 mm and the pipe length is 2500 m, the coefficient of friction is f 0.0025 and the pump works at a speed of 700 rpm. The characteristics of the pump are shown in Table 4 below You are required to: (a) (10 points) Intepret pump characteristic and system characteristic ina graph. (b) (10 points) Calculate the input and output power at the operating point. 0.1 0.2 0.3 0.35 0.4 0.5 15 17 18 16 14 O30 60 SI83.80 45 H. (m) 11 Table 4: Data of the pump from the Manufacturerarrow_forwardA gear pump has a 80-mm outside diameter, a 55-mm inside diameter, and a 25-mm width. If the actual pump flow rate at 2300 rpm and rated pressure is 140 LPM, calculate the Displacement Volume, VD (m3) Group of answer choices 66.9x 10-7 m3 56.3 x 10-6 m3 66.3 x 10-6 m3 97.1 x 10-7 m3 70.9 x 10-6 m3arrow_forward
- Water at 20 °C flows through the pump impeller shown in the figure below, where the inner and outer diameters of the impeller are 160 mm and 400 mm, respectively, and the width of the pump blades is 55 mm. Part A μA Blade Estimate the shaft power required to drive the pump at this operating condition. Express your answer to three significant figures and include appropriate units. W shaft = Value Pump impeller Units The impeller rotates at 3600 rpm. Under a particular operating condition, water enters in a direction normal to the inflow surface, the component of the outflow velocity normal to the outflow surface, Vr, is equal to 19 m/s, and the magnitude of the absolute velocity, V, at the outflow surface is 33 m/s. Outflow surface Inflow surface 4 160 mm ✓ 400 mmarrow_forwardthe hydraulic radius of a pipe with a diameter of 12mm isarrow_forwardOil of specific gravity 0.8 flows through a pipe of 0.25 m diameter. An orifice of 0.1 m diameter is fitted to the pipe to measure the flow rate. A mercury manometer fitted across the orifice records a reading of 0.8 m. Calculate the coefficient of discharge of the orifice meter if the flow rate measured by it is 0.082 m3/s.arrow_forward
- 2. A calibration test of a 15 mm circular sharp-edged orifice in the end of a 50 mm pipe showed a discharge of 0.8 liter per second of water when the pressure head on the center line of the pipe just upstream from the orifice was 2.70 m. The diameter of the jet at the vena contracta was found to be 12 mm. Compute the three orifice coefficients. Compute each coefficient independently from the other coefficients.arrow_forwardOn the head side of a hydraulic cylinder, the rod is 1/2 inch in diameter and the piston is 2 inches in diameter. Calculate the force applied while retracting the rod and the speed at which it moves if the operating pressure is 150 psi and the flow rate is 6.5 gpm. Answer is incomplete without units.arrow_forwardWhich of the following equations below describes the system head of the piping shown below. The total length of the pipe is 154 ft. Take the friction factor to be 0.026. The pipe used has a nominal diameter of 4 inches and Schedule No. 40. The system head H is in ft and the flow rate Q is in ft^3/s. Hint: You need to use the Tioga table and K value for minor losses. Z₂ = 107 ft Reservoir B 90° regular screwed elbow Pump Z₁ = 53 ft Reservoir A A) H=51+25.98(Q^2) B) H=54+24.98(Q^2) ⒸH=54+25.98(Q^2) ⠀arrow_forward
- Answer asap. will upvotearrow_forwardQ11 Calculate the power required for a water pump used in a closed system with a flow rate Q=0.0076 m³/s. Assume that the section area=0.00511m2 and the discharge (7 marks) area=0.0037m². Water Suction Discharge pump Outlet gauge pressure=250 kPa Inlet gauge pressure=147 kPaarrow_forwardDetermine the power requirement of the pump shown in Figure 3.0, assuming it has an efficiency of 88%. The system has a loss coefficient of 3.0 up to point A, and K =1.2 from point B to point C. Neglect any losses through the exit nozzle. Additionally, compute the pressures at points A and B. Water 15 m 2 cm 4 cm dia. 5 cm dia. Figure 3.0 400 kPaarrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY