Research Article
Jul 1970
Efficiency of Air-Entraining Vortex Formation at Water Intake
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 96, Issue 7
Abstract
The basic mechanisms for air-entraining vortices to form at a water intake are examined and vorticity arising in boundary layers is considered in detail. Theoretical expressions are developed for calculating the maximum strength of air-entraining vortex which may form at a water intake. Experiments confirm that it is possible to calculate the strength of vortex from a knowledge of approach conditions and intake geometry. For the conditions of these tests the efficiency of vortex formation is approximately unity. A kinetic energy evaluation for the approach flow and intake flow sections indicates the organizational nature of the process and gives values for the additional pressure losses at an intake which are attributable to vortex formation.
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Published In
Journal of the Hydraulics Division
Volume 96 • Issue 7 • July 1970
Pages: 1403 - 1416
Copyright
© 1970 American Society of Civil Engineers.
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Published in print: Jul 1970
Published online: Feb 3, 2021
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Authors
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Michael C. Quick
Assoc. Prof., Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, British Columbia, Canada
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