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A rotating viscometer consists of two 0.6 m long co-axial cylinders with Ø = 0.3 m and 0.32 m respectively. (The gap between the cylinders is 1 cm.) The external cylinder is fixed and the inner cylinder is rotating at 2.5 rpm.
(a) Calculate the shear stress on the cylinder walls.
(b) What is the shear stress in the fluid at 5 mm from the walls?
(c) Calculate the power required to drive the rotating viscometer.
The fluid is a SAE40 oil (density: 871 kg/m3, viscosity: 0.6 Pa.s). Remember, the power equals the product of the angular velocity time the torque between the fluid and the moving cylinder.
A geotechnical report has suggested an allowable bearing pressure of 200kPa. Determine the minimum size of the pad footing 2 metres wide for a steel column if a factor of safety of 2.0 is recommended
Prepare and tabulate the design aid for partial flow as per the equations for interpolation of velocity and diameter for corresponding flows.
When a 60 kg boy floats in the pool 93% of his body is submerged. How much force must he exert to stay submerged on the bottom of the pool to remain fully submerged
A simply supported beam, 2 inches wide by 4 inches high and 12 feetlong is subjected to a concentrated load of 2000 lb at a point 3 ftfrom one of the supports. Determine the maximum fiber stress and the stress in a fiber located 0.5 inches from the t..
You wish to retire at age 66 and at the end of each month thereafter for 30 years, to receive $5000. Assume that you begin making monthly payments into an account at age 24.
A fluid film 0.1 mm thick separates solid and surface. The fluid viscosity is 0.04 N*sec/m^2. Assuming the velocity distribution in the film is linear, find the terminal velocity of the block. The area of the cube in contact with the film is 0.25 ..
SE corner of Sec. 14, T 6 S, R 5 E, Indian PM, and the NW corner of Sec. 23, T 6 S, R 3 E, Indian PM.
Segment A of the composite beam is made from 2014-T6 aluminum alloy and segment B is A-36 steel. If w = 0.9 kip/ft, determine the absolute maximum bending stress developed in the aluminum and steel. Sketch the stress distribution on the cross sect..
using darcy's law compute the quantity of flow, seepage velocity and contaminant loading of the river. ground water is flowing through unconfined uniform 3m thick sand aquifer and discharging to river.
A loose, uncompacted sand fill is 2 m in depth and has a relative density of 40%. Laboratory tests indicate that the minimum and maximum void ratio of the sand are 0.46 and 0.90, respectively.
Calculate the minimum flow rate (m^3/hr) of river water needed to acheive pre cooling hot, pasteurized liquid prodcut assuming that 10% heat is lost to the surroundings during exchange and that the water temp after cooling should not exceed 25 deg..
The motor A delivers 3000 hp to the shaft at 1500 rev/min, of which 1000 hpis removed by gear B and 2000 hp is removed by gear C. Determine (a) the maximum shear stress in the shaft; and (b) the angle of twist of end D relative to end A.
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