A horizontal axisymmetric jet of air with 0.4-in.-diameter strikes a stationary vertical disk of 7.5 in. diameter. The jet speed is 225 ft/s at the nozzle exit. A manometer is connected to the center of the disk. Calculate (a) the deflection, if the manometer liquid has SG = 1.75, (b) the force exerted by the jet on the disk, and (c) the force exerted on the disk if it is assumed that the stagnation pressure acts on the entire forward surface of the disk. Sketch the streamline pattern and plot the distribution of pressure on the face of the disk.
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
Engineering Mechanics: Statics
INTERNATIONAL EDITION---Engineering Mechanics: Statics, 14th edition (SI unit)
Applied Fluid Mechanics (7th Edition)
Engineering Mechanics: Dynamics (14th Edition)
Fundamentals Of Thermodynamics
Fundamentals of Heat and Mass Transfer
- Air flows from a 5-mm diameter nozzle and it strikes a curved vane, which is in a vertical plane as shown in the picture below. A stagnation tube connected to a water U-tube manometer is located in the free air jet. Determine the horizontal component of the force that the air jet exerts on the vane. Neglect the weight of the air and all friction. Air Stagnation Fixed vane tube Water 5-mm diam. Open Free air jet 15 cm 45 30⁰arrow_forwardA jet of water 95 mm diameter is moving with a velocity of 25 m/s, strikes a stationary plate. Find the normal force on plate when (i) Plate is normal to jet. (ii) The angle between jet and plate is 30°.arrow_forwardA large commercial power washer delivers 21 gal/min ofwater through a nozzle of exit diameter one-third of aninch. Estimate the force of the water jet on a wall normal tothe jet.arrow_forward
- A water jet 3 in in diameter strikes a concrete (SG =2.3)slab which rests freely on a level fl oor. If the slab is 1 ft wide into the paper, calculate the jet velocity which willjust begin to tip the slab over.arrow_forwardcontoured nozzle. In the test section, where the flow is straight and nearly uniform, a static pressure tap is drilled into the tunnel wall. A manometer connected to the tap shows that the static pressure within the tunnel is 45 mm of water below atmosphere. Assume that air is incompressible and at pressure is 100 kPa (absolute). Calculate the velocity in the wind tunnel section (Refer to Fig. 6.6). Density of P. 100 kPa water is 999 kg/m' and characteristic gas constant for V-0 air is 287 J/kg K. 25°C, O Test section 25°C (GATE) To manometer Fig. 6.6arrow_forwardThe entrance flow between two parallel plates (gap h) has a velocity that varies linearly at the entrance and develops into a fully parabolic profile at the exit. What is the relationship between the maximum velocity at the entrance and that at the exit? You can show by symmetry that the maximum velocity is attained at the mid-plane between the two plates.arrow_forward
- Q8. A wind is blowing steadily at a speed of 15.0 m/s strikes the blades of the wind turbine. Assume the length of each blade of the turbine is 15 m long and the density of air 1.23kg/m³ at the sea level. (a) Calculate the area swept by the wind turbine? (b) Find the pressure difference developed across the blades of the wind turbine? (c) Find the force with which the wind strikes the blades of the wind turbine?arrow_forwardStudy the water tank illustrated in Figure 1 below and calculate the horizontal distance (x) the free jet of water will travel before striking the ground if H = 3 m and h = 180 cm. H X Figure 1: Water tank Free jetarrow_forwardA jet of water 75 mm in diameter and moving to the right with a velocity of 25 m/s impinges on a flat plate which is moving in the same direction as the jet with a velocity of 10 m/s. What force would the jet exert on the plate?arrow_forward
- Calculate the force required to hold a flat plate in equilib rium perpendicular to the flow of water at 25 m/s issuing from a 75-mm-diameter nozzle.arrow_forwardConsider the Lockheed SR-71 Blackbird shown in flying at a standard altitude of 25 km. The pressure measured by a Pitot tube on this airplane is 3.88 × 104 N/m2.Calculate the velocity of the airplane.arrow_forwardThe water jet -13.5 cm in the figure strikes normal to a fixed plate. The velocity of the jet is -8 m/s. Neglect gravity and friction. Compute the force Fin newtons required to hold the plate fixed. * N Platearrow_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