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Fluid Flow in a Circular Cylinder Subject to Circulatory Oscillation-Theoretical Analysis
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 Title & Authors
Fluid Flow in a Circular Cylinder Subject to Circulatory Oscillation-Theoretical Analysis
Seo,Yong-Gwon; Kim, Hyeon-Min;
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 Abstract
A fluid flow inside a circular cylinder subject to horizontal and circular oscillation is analyzed theoretically. Under the assumption of small-amplitude oscillation, the governing equations take linear forms. The velocity field is obtained in terms of the first kind of Bessel function of order 1. It was found that a particle describes an orbit close to a circle in the central region and an arc near the side wall. We also obtained the Stokes' drift velocity induced by the traveling wave along the circumferential direction. The Eulerian streaming velocities at the edge of the bottom and side boundary layers were also obtained. It was shown that the vertical component of the steady streaming velocity on the side wall is almost proportional to the amplitude of the free surface motion.
 Keywords
Circular Cylinder;Circulatory Oscillation;Boundary-Layer Flow;Inviscid Flow;Stokes Drift Velocity;Standing Wave;Progressive Wave;
 Language
Korean
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