Determination of Viscosity of Oil by Falling-Sphere Method using Digital-Imaging system
No Thumbnail Available
Date
2009-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
Viscosity is the most important physical property for lubricating oils. The measurement
of viscosity resists on the velocity limit measurement of falling-ball, corrected
principal identified effects (edge or wall effects, inertial effects, and end effects).
In this research falling-sphere technique is used to measure the viscosity of Total
quartz 20W50 motor oil by monitoring the terminal velocity at which a sphere falls
under gravity in a cylindrical tube containing the test fluid. The experiments, the
sphere is monitored using video system and the position coordinate and time are
measured.
The principal difficulties with this system are the measurement of the velocity of
the ball. The result of the experiment agree with the theoretical values and reported
value by Total oil company, even-though, there are uncertainties in measurement of
falling velocity, corrected terminal velocity, density of sphere, and fluid and radius
Description
Keywords
Determination of Viscosity of Oil