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2015 | 128 | 1 | 123-127
Article title

Viscosity Measurement Using Optical Tracking of Free Fall in Newtonian Fluid

Content
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Languages of publication
EN
Abstracts
EN
This paper presents a novel method in viscosity assessment using a tracking of the ball moving in Newtonian fluid. The movement of the ball is assimilated to a free fall within a tube containing liquid of whose we want to measure a viscosity. In classical measurement, height of fall is estimated directly by footage where accuracy is not really considered. Falling ball viscometers have shown, on the one hand, a limit in the ball falling height measuring, on the other hand, a limit in the accuracy estimation of velocity and therefore a weak precision on the viscosity calculation of the fluids. Our technique consist to measure the fall height by taking video sequences of the ball during its fall and thus estimate its terminal velocity which is an important parameter for cinematic velocity computing, using the Stokes formalism. The time of fall is estimated by cumulating time laps between successive video sequences which mean that we can finally estimate the cinematic viscosity of the studied fluid.
Keywords
EN
Year
Volume
128
Issue
1
Pages
123-127
Physical description
Dates
published
2015-7
received
2014-07-01
revised
2015-04-06
(unknown)
2015-05-06
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv128n127kz
Identifiers
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