Fox And Mcdonald's Introduction To Fluid Mechanics
9th Edition
ISBN: 9781118921876
Author: Pritchard, Philip J.; Leylegian, John C.; Bhaskaran, Rajesh
Publisher: WILEY
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Chapter 2, Problem 60P
A shock-free coupling for a low-power
P2.60
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Chapter 2 Solutions
Fox And Mcdonald's Introduction To Fluid Mechanics
Ch. 2 - For the velocity fields given below, determine:...Ch. 2 - For the velocity fields given below, determine:...Ch. 2 - A viscous liquid is sheared between two parallel...Ch. 2 - For the velocity field V=Ax2yi+Bxy2j, where A = 2...Ch. 2 - A fluid flow has the following velocity...Ch. 2 - When an incompressible, nonviscous fluid flows...Ch. 2 - For the free vortex flow the velocities are t =...Ch. 2 - For the forced vortex flow the velocities are t =...Ch. 2 - A velocity field is specified as V=axyi+by2j,...Ch. 2 - A velocity field is given by V=ax3i+bxy3j, where a...
Ch. 2 - The velocity for a steady, incompressible flow in...Ch. 2 - The flow field for an atmospheric flow is given by...Ch. 2 - For the velocity field V=AxiAyj,, where A = 2s 1....Ch. 2 - A velocity field in polar coordinates is given...Ch. 2 - The flow of air near the Earths surface is...Ch. 2 - A velocity field is given by V=aytibxj, where a =...Ch. 2 - Air flows downward toward an infinitely wide...Ch. 2 - Consider the flow described by the velocity field...Ch. 2 - Consider the velocity field V = axi + by(1 + ct)...Ch. 2 - Consider the flow field given in Eulerian...Ch. 2 - A velocity field is given by V=axti+byj, where A =...Ch. 2 - Consider the garden hose of Fig. 2.5. Suppose the...Ch. 2 - Consider the velocity field of Problem 2.18. Plot...Ch. 2 - Streaklines are traced out by neutrally buoyant...Ch. 2 - Consider the flow field V=axti+bj, where a = 1/s2...Ch. 2 - A flow is described by velocity field V=ay2i+bj,...Ch. 2 - Tiny hydrogen bubbles are being used as tracers to...Ch. 2 - A flow is described by velocity field V=ai+bxj,...Ch. 2 - A flow is described by velocity field V=ayi+btj,...Ch. 2 - A flow is described by velocity field V=ati+bj,...Ch. 2 - The variation with temperature of the viscosity of...Ch. 2 - The variation with temperature of the viscosity of...Ch. 2 - Some experimental data for the viscosity of helium...Ch. 2 - The velocity distribution for laminar flow between...Ch. 2 - What is the ratio between the viscosities of air...Ch. 2 - Calculate velocity gradients and shear stress for...Ch. 2 - A very large thin plate is centered in a gap of...Ch. 2 - A female freestyle ice skater, weighing 100 lbf,...Ch. 2 - A block of mass 10 kg and measuring 250 mm on each...Ch. 2 - A 73-mm-diameter aluminum (SG = 2.64) piston of...Ch. 2 - A vertical gap 25 mm wide of infinite extent...Ch. 2 - A cylinder 8 in. in diameter and 3 ft long is...Ch. 2 - Crude oil at 20C fills the space between two...Ch. 2 - The piston in Problem 2.40 is traveling at...Ch. 2 - A block of mass M slides on a thin film of oil....Ch. 2 - A block 0.1 m square, with 5 kg mass, slides down...Ch. 2 - A torque of 4 N m is required to rotate the...Ch. 2 - A circular disk of diameter d is slowly rotated in...Ch. 2 - The fluid drive shown transmits a torque T for...Ch. 2 - A block that is a mm square slides across a flat...Ch. 2 - In a food-processing plant, honey is pumped...Ch. 2 - SAE 10W-30 oil at 100C is pumped through a tube L...Ch. 2 - The lubricant has a kinematic viscosity of 2:8105...Ch. 2 - Calculate the approximate viscosity of the oil....Ch. 2 - Calculate the approximate power lost in friction...Ch. 2 - Fluids of viscosities 1 = 0.1 Ns/m2 and 2 = 0.15...Ch. 2 - A concentric cylinder viscometer may be formed by...Ch. 2 - A concentric cylinder viscometer is driven by a...Ch. 2 - A shaft with outside diameter of 18 mm turns at 20...Ch. 2 - A shock-free coupling for a low-power mechanical...Ch. 2 - A proposal has been made to use a pair of parallel...Ch. 2 - The cone and plate viscometer shown is an...Ch. 2 - A viscometer is used to measure the viscosity of a...Ch. 2 - A concentric-cylinder viscometer is shown. Viscous...Ch. 2 - Design a concentric-cylinder viscometer to measure...Ch. 2 - A cross section of a rotating bearing is shown....Ch. 2 - Small gas bubbles form in soda when a bottle or...Ch. 2 - You intend to gently place several steel needles...Ch. 2 - According to Folsom [6], the capillary rise h...Ch. 2 - Calculate and plot the maximum capillary rise of...Ch. 2 - Calculate the maximum capillary rise of water...Ch. 2 - Calculate the maximum capillary depression of...Ch. 2 - Water usually is assumed to be incompressible when...Ch. 2 - The viscous boundary layer velocity profile shown...Ch. 2 - In a food industry process, carbon tetrachloride...Ch. 2 - What is the Reynolds number of water at 20C...Ch. 2 - A supersonic aircraft travels at 2700 km/hr at an...Ch. 2 - SAE 30 oil at 100C flows through a 12-mm-diameter...Ch. 2 - A seaplane is flying at 100 mph through air at...Ch. 2 - An airliner is cruising at an altitude of 5.5 km...
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- A hydrodynamic journal bearing is subject to 2000 N load at a rotational speed of 2000 rpm Both bearing bore diameter and length are 40 mm. If radial clearance is 20 um and bearing is lubricated with an oil having viscosity 0.03 Pa-s, what is the Sommerfield number of the bearing?arrow_forwardProblem 9 If the viscosity of water at 70°C is 0.00402 poise and its specific gravity is 0.978 determine its absolute viscosity in Pa-s and its kinematic viscosity in m²/s and in stokes. Problem 10 An 18-kg slab slides down a 15° inclined plane on a 3 mm thick film of oil with viscosity μ=0.0814 Pa-sec. if the contact area is 0.3 m², find the terminal velocity of the slab. Neglect air resistance. Problem 11 What is the value of the surface tension of a small drop of water 0.3 mm in diameter which is in contact with air if the pressure within the droplet is 561 Pa? Problem 12 An atomizer forms water droplets 45 µm in diameter. Determine the excess pressure within these droplets using o=0.0712 N/m. Problem 13 Distilled water stands in a glass tube of 9 mm diameter at a height of 24 mm. what is the true static height? Use o=0.0742 N/m. Problem 14 A sonar transmitter operates at 2 impulses per second. If the device is held to the surface of fresh water (EB-2.04x10° Pa) and the echo is…arrow_forwardH.W:A piece of the pipe 300 mm long weighing 13 N and having i.d of 51mm is slipped over a vertical shaft 50 mm in diameter and allowed to fall .calculate the approximate velocity attained by the pipe if a film of oil of viscosity 25 pa.s is maintained between pipe and shaft .arrow_forward
- A journal bearing 60mm in diameter & 90mm long runs at 450 rpm. the oil used for hydrodynamic lubrication has absolute viscosity of 0.06 kg/m-s. The diameter clearance is 0.1 mm. The bearing pressure will bearrow_forwardA shock-free coupling for a low-power mechanical drive is to be made from a pair of concentric cylinders. The annular space between the cylinders is to be filled with oil. The drive must transmit power, ? = 10 W. Other dimensions and properties are as shown. Neglect any bearing friction and end effects. Assume the minimum practical gap clearance δ for the device is δ = 0.25 mm. Determine the viscosity that should be specified to satisfy the requirement for this device.arrow_forwardjournal bearing 100 mm x 100 mm supports a shaft running at 1500 rpm. Radial clearance is 0.1 mm, minimum film thickness is 0.02 mm. Calculate the maximum radial load the bearing can support and for that load calculate the power lost in friction and oil temperature rise. Consider Absolute viscosity = 20e Pa.s. Specific gravity of oil = 0.88 and specific heat of oil = 2.1 kJ/kg K. Please provide step by step answer.arrow_forward
- N:A piece of the pipe 300 mm long weighing 13 N and having i.d of olmm is slipped over a vertical shaft 50 mm in diameter and allowed to fall .calculate the approximate velocity attained by the pipe if a film of oil of viscosity 25 pa.s is maintained between pipe and shaft.arrow_forwardQ6. A hydro-cylinder with an inner diameter of D=200 mm has the oil pressure is p= 1 N/mm?. The cylindrical barrel and the flange are connected by eight uniformly distributed bolts. The relative stiffness of the bolted connection is ka/(ks +kim) = 0.4. The applied preload is Qp =3F (F is the operating force) and the allowable stress of bolt material is [0] = 150 N/mm?. (1) The total tensile load carried by each bolt; (2) The resultant load on the clamped members; (3) The minor diameter required for the bolts.arrow_forwardA 25mm radius shaft is forced at 300 mm/s inside a 25.5 mm radius bearing sleeve having a length of 230 mm. the clearance between them is filled with oil (SG = 0.8) having a kinematic viscosity of 0.003 m²/s. what is the force on the shaft exerted by the oil? Select the correct response: 24.7 N 276.4 N 360 N 64.8 N 76.1 Narrow_forward
- A tape, of width w = 25.40 mm is to be coated on both sides with a lubricant by drawing in througha narrow gap of length, L as depicted in Figure 2. Following below values are given:c = 0.300 mm, t = 0.381 mm, and L = 20.0 mm.The lubricant, of dynamic viscosity = 1.0054 kg/m.s completely fills the gap and the velocitydistribution is assumed to linear as shown in Figure 2. The maximum allowable force in the tape isgiven as F = 30.04 N. Find the maximum allowable tape speedarrow_forwardShow complete solution.arrow_forwardA steel tape 0.5 mm thick and 20 mm wide is pulled by a force F through a slit opening 1.5 mm and length 15 mm. Considering that the tape is centered on the slit, that lubricating oil of viscosity µ = 0.4 Nm-2? fills the gap spaces not occupied by the tape and that the maximum tape speed is 10 m/s, calculate the maximum force F.arrow_forward
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