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The containment of an oil slick by a boom placed across a uniform stream

Published online by Cambridge University Press:  19 April 2006

N. D. Di Pietro  and
R. G. Cox
N. D. Di Pietro
Affiliation:
McGill University, Department of Civil Engineering and Applied Mechanics, 817 Sherbrooke St West, Montreal PQ H3A 2K6. Present address: SNC/Foster Wheeler Ltd., 1 Complex Desjardins, Montreal, Quebec.
R. G. Cox
Affiliation:
McGill University, Department of Civil Engineering and Applied Mechanics, 817 Sherbrooke St West, Montreal PQ H3A 2K6.
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Abstract

A small region (called the surface tension region) where pressure differences across the oil–water and oil–air interfaces are important is shown to exist between the gravity viscous and monolayer regions in a spreading oil slick (Di Pietro, Huh & Cox 1978). The importance of this new region is that (i) it is necessary in order to connect the gravity–viscous and monolayer regions and (ii) it is a region where slopes of interfaces are large. This idea is used to find the thickness profile of an oil layer contained upstream of a barrier (an oil boom) placed across a channel in which water is flowing at a constant velocity. The assumption is also made that the velocity difference across the oil layer is small compared with the water velocity. The general conditions for the validity of the results are then discussed together with the modifications to the theory which are necessary if the boundary layer in the water below the oil should be turbulent rather than laminar. Good agreement is found to exist between experimental results for unsteady spreading on quiescent water in a channel and the results of the theory applied to this situation assuming quasi-steady spreading.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 96 , Issue 3 , 13 February 1980 , pp. 613 - 640
Copyright
© 1980 Cambridge University Press

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