At 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 kg/m. Find kinematic viscosity.
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- Find the kinematic viscosity of an oil having density of 980kg/m^2 when at a certain point in the oil, the shear stress is 0.25 Pa and the velocity gradient is 0.3 m/s.A shaft (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 W, find the viscosity of lubricant oil in the clearance. Take length of sleeve as 150 mm. Assume a linear velocity profile in the fluid film.In Fig. 1.7, if the fluid is glycerin at 20 ° C and the widthbetween plates is 6 mm, what shear stress (in Pa) isrequired to move the upper plate at 5.5 m/s? What is theReynolds number if L is taken to be the distance betweenplates?
- An oil film of thickness 1.5 mm is used for lubrication between asquare plate of size 0.9 m × 0.9 m and an inclined plane having anangle of inclination 200. The weight of the square plate is 392.4 N andit slides down the plane with a uniform velocity of 0.2 m/s. Find thedynamic viscosity of the oilSubject: Fluid mechanics A fluid at 20°C has a viscosity of 0.007 Poise. What shear stress in Pa is required to deform this fluid at a strain rate of 294000/min?a submarine is 100 m long, the shape of it hull is roughly cyli9ndrical with a diameter of 15 m. when it is submerged, it cruises at a speed of about 40 kdots or aproximately 20 m/s compute the reynald number, if the viscosity is 1.0x10^-3 pa-s
- 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, find the Sommerfield number of the bearing.In a stream of glycerine in motion, at a certain point the velocity gradient is 0.25 meter per sec per meter. The mass density of fluid is 1268.4 kg per cubic meter and kinematic viscosity is 6.30 x 10^-4 square meter per second. Calculate the shear stress in Pascal at the point.A natural gas well contains methane (M=16), which is practically a perfect gas. The pressure at the surface is 1000 psig. What is the pressure at a depth of 10,000 ft? How much error would be made by assuming that methane were a constant-density fluid? Assume the temperature isconstant at 70F.
- The surface tensions of mercury and water at 60 degrees Celcius are 0.47N/m and 0.0662 N/m, respectively. What capillary height changes will occur in these two fluids when they are in contact with air in a glass tube of radius 0.30mm? Use θ = 130° for mercury, and 0° for water; y = 132.3 kN/m3 for mercury and 9.650 kN/m3 for water. Provide the given along with its solution.The rotating-cylinder viscometer in Fig. shears thefluid in a narrow clearance ∆ r , as shown. Assuming a linearvelocity distribution in the gaps, if the driving torque M ismeasured, find an expression for μ by ( a ) neglecting and( b ) including the bottom friction.Estimate the capillary depression for mercury in a glass capillary tube 2 mm in diameter. Use σ = 0.514 N/m and θ = 140°. The answer is h=5.9mm (Our subject is FLUID MECHANIC, all I need is a clear solution) thank you