Problem 1P: For the velocity fields given below, determine: (a) whether the flow field is one-, two-, or... Problem 2P: For the velocity fields given below, determine: (a) whether the flow field is one-, two-, or... Problem 3P: A viscous liquid is sheared between two parallel disks; the upper disk rotates and the lower one is... Problem 4P: For the velocity field V=Ax2yi+Bxy2j, where A = 2 m2s1 and B = 1 m2s1, and the coordinates are... Problem 5P: A fluid flow has the following velocity components: u = 1 m/s and = 2x m/s. Find an equation for... Problem 6P: When an incompressible, nonviscous fluid flows against a plate in a plane (two-dimensional) flow, an... Problem 7P: For the free vortex flow the velocities are t = 5/r and r = 0. Assume that lengths are in feet or... Problem 8P: For the forced vortex flow the velocities are t = r and r = 0. Plot the streamlines of this flow.... Problem 9P: A velocity field is specified as V=axyi+by2j, where a = 2 m1s1, b = 6 m1s1, and the coordinates are... Problem 10P: A velocity field is given by V=ax3i+bxy3j, where a = 1 m2s1 and b = 1 m3s1. Find the equation of the... Problem 11P: The velocity for a steady, incompressible flow in the xy plane is given by V=iA/x+jAy/x2, where A =... Problem 12P: The flow field for an atmospheric flow is given by V=Ky2(x2+y2)i+Kx2(x2+y2)j where K = 105 m2/s, and... Problem 13P: For the velocity field V=AxiAyj,, where A = 2s 1. which can be interpreted to represent flow in a... Problem 14P: A velocity field in polar coordinates is given with the radial velocity as Vr = A/r and the... Problem 15P: The flow of air near the Earths surface is affected both by the wind and thermal currents. In... Problem 16P: A velocity field is given by V=aytibxj, where a = 1 s2 and b = 4 s1. Find the equation of the... Problem 17P: Air flows downward toward an infinitely wide horizontal flat plate. The velocity field is given by... Problem 18P: Consider the flow described by the velocity field V=Bx(1+At)i+Cyj, with A = 0.5 s1 and B = C = 1 s1.... Problem 19P: Consider the velocity field V = axi + by(1 + ct) j, where a = b = 2 s1 and c = 0:4 s1. Coordinates... Problem 20P: Consider the flow field given in Eulerian description by the expression V=axi+butj, where a = 0:2... Problem 21P: A velocity field is given by V=axti+byj, where A = 0:1 s2 and b = 1 s1. For the particle that passes... Problem 22P: Consider the garden hose of Fig. 2.5. Suppose the velocity field is given by V=u0i+v0sin[(tx/u0)]j,... Problem 23P: Consider the velocity field of Problem 2.18. Plot the streakline formed by particles that passed... Problem 24P: Streaklines are traced out by neutrally buoyant marker fluid injected into a flow field from a fixed... Problem 25P: Consider the flow field V=axti+bj, where a = 1/s2 and b = 1/3 m/s. Coordinates are measured in... Problem 26P: A flow is described by velocity field V=ay2i+bj, where a = 1 m1 s1 and b = 2 m/s. Coordinates are... Problem 27P: Tiny hydrogen bubbles are being used as tracers to visualize a flow. All the bubbles are generated... Problem 28P: A flow is described by velocity field V=ai+bxj, where a = 2 m/s and b = 1 s1. Coordinates are... Problem 29P: A flow is described by velocity field V=ayi+btj, where a = 0:2 s1 and b = 0:4 m/s2. At t = 2 s, what... Problem 30P: A flow is described by velocity field V=ati+bj, where a = 0:4 m/s2 and b = 2 m/s. At t = 2 s, what... Problem 31P: The variation with temperature of the viscosity of air is represented well by the empirical... Problem 32P: The variation with temperature of the viscosity of air is correlated well by the empirical... Problem 33P: Some experimental data for the viscosity of helium at 1 atm are Using the approach described in... Problem 34P: The velocity distribution for laminar flow between parallel plates is given by umax=1(2yh)2 where h... Problem 35P: What is the ratio between the viscosities of air and water at 10C? What is the ratio between their... Problem 36P: Calculate velocity gradients and shear stress for y = 0, 0.2, 0.4, and 0.6 m, if the velocity... Problem 37P: A very large thin plate is centered in a gap of width 0.06m with different oils of unknown... Problem 38P: A female freestyle ice skater, weighing 100 lbf, glides on one skate at speed V = 20 ft/s. Her... Problem 39P: A block of mass 10 kg and measuring 250 mm on each edge is pulled up an inclined surface on which... Problem 40P: A 73-mm-diameter aluminum (SG = 2.64) piston of 100-mm length resides in a stationary... Problem 41P: A vertical gap 25 mm wide of infinite extent contains oil of specific gravity 0.95 and viscosity 2.4... Problem 42P: A cylinder 8 in. in diameter and 3 ft long is concentric with a pipe of 8.25 in. i.d. Between... Problem 43P: Crude oil at 20C fills the space between two concentric cylinders 250 mm high and with diameters of... Problem 44P: The piston in Problem 2.40 is traveling at terminal speed. The mass m now disconnects from the... Problem 45P: A block of mass M slides on a thin film of oil. The film thickness is h and the area of the block is... Problem 46P: A block 0.1 m square, with 5 kg mass, slides down a smooth incline, 30 below the horizontal, on a... Problem 47P: A torque of 4 N m is required to rotate the intermediate cylinder at 30 r/min. Calculate the... Problem 48P: A circular disk of diameter d is slowly rotated in a liquid of large viscosity , at a small distance... Problem 49P: The fluid drive shown transmits a torque T for steady-state conditions (1 and 2 constant). Derive an... Problem 50P: A block that is a mm square slides across a flat plate on a thin film of oil. The oil has viscosity ... Problem 51P: In a food-processing plant, honey is pumped through an annular tube. The tube is L = 2 m long, with... Problem 52P: SAE 10W-30 oil at 100C is pumped through a tube L = 10 m long, diameter D = 20 mm. The applied... Problem 53P: The lubricant has a kinematic viscosity of 2:8105 m2/s and specific gravity of 0.92. If the mean... Problem 54P: Calculate the approximate viscosity of the oil. P2.54 Problem 55P: Calculate the approximate power lost in friction in this ship propeller shaft bearing. P2.55 Problem 56P: Fluids of viscosities 1 = 0.1 Ns/m2 and 2 = 0.15 Ns/m2 are contained between two plates (each plate... Problem 57P: A concentric cylinder viscometer may be formed by rotating the inner member of a pair of closely... Problem 58P: A concentric cylinder viscometer is driven by a falling mass M connected by a cord and pulley to the... Problem 59P: A shaft with outside diameter of 18 mm turns at 20 revolutions per second inside a stationary... Problem 60P: A shock-free coupling for a low-power mechanical drive is to be made from a pair of concentric... Problem 61P: A proposal has been made to use a pair of parallel disks to measure the viscosity of a liquid... Problem 62P: The cone and plate viscometer shown is an instrument used frequently to characterize non-Newtonian... Problem 63P: A viscometer is used to measure the viscosity of a patients blood. The deformation rate (shear... Problem 64P: A concentric-cylinder viscometer is shown. Viscous torque is produced by the annular gap around the... Problem 65P: Design a concentric-cylinder viscometer to measure the viscosity of a liquid similar to water. The... Problem 66P: A cross section of a rotating bearing is shown. The spherical member rotates with angular speed , a... Problem 67P: Small gas bubbles form in soda when a bottle or can is opened. The average bubble diameter is about... Problem 68P: You intend to gently place several steel needles on the free surface of the water in a large tank.... Problem 69P: According to Folsom [6], the capillary rise h (in.) of a water-air interface in a tube is correlated... Problem 70P: Calculate and plot the maximum capillary rise of water (20C) to be expected in a vertical glass tube... Problem 71P: Calculate the maximum capillary rise of water (20C) to be expected between two vertical, clean glass... Problem 72P: Calculate the maximum capillary depression of mercury to be expected in a vertical glass tube 1 mm... Problem 73P: Water usually is assumed to be incompressible when evaluating static pressure variations. Actually... Problem 74P: The viscous boundary layer velocity profile shown in Fig. 2.15 can be approximated by a cubic... Problem 75P: In a food industry process, carbon tetrachloride at 20C flows through a tapered nozzle from an inlet... Problem 76P: What is the Reynolds number of water at 20C flowing at 0.25 m/s through a 5-mm-diameter tube? If the... Problem 77P: A supersonic aircraft travels at 2700 km/hr at an altitude of 27 km. What is the Mach number of the... Problem 78P: SAE 30 oil at 100C flows through a 12-mm-diameter stainless-steel tube. What is the specific gravity... Problem 79P: A seaplane is flying at 100 mph through air at 45F. At what distance from the leading edge of the... Problem 80P: An airliner is cruising at an altitude of 5.5 km with a speed of 700 km/hr. As the airliner... format_list_bulleted