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Uncovering the physics of flapping flat plates with artificial evolution

Milano, Michele and Gharib, Morteza (2005) Uncovering the physics of flapping flat plates with artificial evolution. Journal of Fluid Mechanics, 534 . pp. 403-409. ISSN 0022-1120.

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We consider an experiment in which a rectangular flat plate is flapped with two degrees of freedom, and a genetic algorithm tunes its trajectory parameters so as to achieve maximum average lift force, thus evolving a population of trajectories all yielding optimal lift forces. We cluster the converged population by defining a dynamical formation number for a flapping flat plate, thus showing that optimal unsteady force generation is linked to the formation of a leading-edge vortex with maximum circulation. Force and digital particle image velocimetry measurements confirm this result.

Item Type:Article
Additional Information:Reprinted with permission of Cambridge University Press. (Received March 29 2005); (Revised April 13 2005); Published online by Cambridge University Press 21 June 2005
Record Number:CaltechAUTHORS:MILjfm05
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3391
Deposited By: Archive Administrator
Deposited On:05 Jun 2006
Last Modified:26 Dec 2012 08:54

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