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 2, Problem 54P
Calculate the approximate viscosity of the oil.
P2.54
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from Engineering fluid mechanics 11th
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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- Q1 A smooth cylinder of 50.1 mm inside diameter and 150 a long is placed with its axis vertical. If the clear- ance space is entirely filled with oil of viscosity 2.5 poise, calculate the force to push a shaft 50 mm diameter through the cylinder with a velocityof 0.8 m/sec.arrow_forwardShaft (250 mm diameter) rotates at 250 rpm inside a sleeve (251 mm diameter) with a constant clearance. If the power required to rotate the shaft is 2204 watts, find the viscosity (N.sec/m) of lubricant oil in the clearance. Take length of sleeve as 150 mm. Your answerarrow_forwardالواجب الثاني خواص الموائع ثاني طرق Exl: The density of an oil is 850 kg/m³. Find the relative density and kinematic viscosity if the dynamic viscosity is 5*103 pa.s.arrow_forward
- 2.27 Fluids of viscosities µ1 = 0.1 N s/m2 and 42 = 0.15 N s/m2 are contained between two plates (each plate is 1 m? in area). The thicknesses are h1 = 0.5 mm and h2 = 0.3 mm, respectively. And the upper plate moves at a velocity of 1.5 m/s. Determine the force required to move the upper plate and the fluid velocity at the interface between the two fluids. F, V h2 H2 h1 P2.27 Hint: Both Velocity and Shear stress are continuous at the fluid-fluid interface.arrow_forwardA square metal plate 1.8 m side and 1.8 mm thick weighing 60 N is to be lifted through a vertical gap of 30 mm of infinite extent (Fig. (1)). The oil in the gap has a specific gravity of 0.95 and viscosity of 3 N.s/m². If the metal plate is to be lifted at a constant speed of 0.12 m/s, find the force required. Oil 1.8 mm. 30 mm W = 60 N Fig. 1arrow_forwardAt a certain point in castor oil the shear stress is 0.216 N/m and the velocity gradient 0.216 s. If mass density of castor oil is 959.42 ka/m. Find kinematic viscosity.arrow_forward
- Q4 A plate 0.05 mm distant from a fixed plate moves at 1.2 m/s ad requires a force of 2.2 N/m to maintain this speed. Find the viscosity of the fluid between the plates.arrow_forwardThe belt in Fig. 2, moves at a steady velocity V in the tank of oil , as shown. Assuming a linear velocity profile in the oil, determine the force F required to belt-drive at velocity of 7 m/s. if you know that the viscosity of oil is 0.29 kg/(m.s). *arrow_forward2. A flat plate weighing 1 N has a surface area of 0.1 m2. It slides down an inclined plane at 30°to the horizontal, at a constant speed of 3 m/s. If the inclined plane is lubricated with an oil of viscosity 0.1 N.S/m2, find the thickness of the oil film.arrow_forward
- A flat plate of area 2x10¹ cm² is pulled with a speed of 0.5 m/s relative to another plate located at a distance of 0.2 mm from it. If the fluid separated the two plates has a viscosity of 1.0 poise, find the force required to maintain the speed.arrow_forward1. For the shown conic body which rotating with constant angular velocity 10 rad/s, find the torque which effected by viscosity of the oil that surrounding the conic body. Take: Radius of the cone is 2 in Height of the cone is 4 in Oil viscosity is 3.125x107 lb.s/in? Answer : Torque =0.02535 lb. In P10 rad/s 0.01-in film 0.01 inarrow_forwardA Plate 0.05 mm distant from a fixed plate moves at 1.2 m/s and require a force of 2.2 N/m2 to maintain this speed. Find the viscosity of the fluid between the plates.arrow_forward
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