Chaotic Advections for Stokes Flows in Circular Cavity
Publication: Journal of Engineering Mechanics
Volume 123, Issue 8
Abstract
Steady Stokes flows in a circular cavity is analytically solved by using Green's function. The familiar phenomenon of Lagrangian chaos for Stokes flows in a long, circular cylinder filled with a viscous fluid subject to various boundary conditions is studied numerically. To achieve chaotic mixing for the fluid particles, two mobile outer walls in close contact with a fixed inner wall that have two corresponding openings are made to (independently) oscillate periodically in time. The expansion rate for a thin fluid filament is also determined when the oscillatory modulation is turned on. Our study shows that counterrotating boundaries have a greater tendency to create mixing than corotating ones.
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Published In
Journal of Engineering Mechanics
Volume 123 • Issue 8 • August 1997
Pages: 774 - 782
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Aug 1, 1997
Published in print: Aug 1997
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