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Chaos in a cylinder wake due to forcing at the Strouhal frequency

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dc.contributor.author Perdikaris, PG en
dc.contributor.author Kaiktsis, L en
dc.contributor.author Triantafyllou, GS en
dc.date.accessioned 2014-03-01T01:29:58Z
dc.date.available 2014-03-01T01:29:58Z
dc.date.issued 2009 en
dc.identifier.issn 1070-6631 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/19422
dc.subject.classification Mechanics en
dc.subject.classification Physics, Fluids & Plasmas en
dc.subject.other Chaotic state en
dc.subject.other Cylinder wake en
dc.subject.other In-line en
dc.subject.other Incoming flows en
dc.subject.other Lift force en
dc.subject.other Moving cylinder en
dc.subject.other Natural modes en
dc.subject.other Numerical simulation en
dc.subject.other Spatial structure en
dc.subject.other Strouhal frequencies en
dc.subject.other Two-dimensional flow en
dc.subject.other Chaotic systems en
dc.subject.other Computer simulation en
dc.subject.other Cylinders (shapes) en
dc.subject.other Flow simulation en
dc.subject.other Vortex shedding en
dc.subject.other Wakes en
dc.subject.other Navier Stokes equations en
dc.title Chaos in a cylinder wake due to forcing at the Strouhal frequency en
heal.type journalArticle en
heal.identifier.primary 10.1063/1.3258287 en
heal.identifier.secondary http://dx.doi.org/10.1063/1.3258287 en
heal.identifier.secondary 101705 en
heal.language English en
heal.publicationDate 2009 en
heal.abstract In this letter we show that a cylinder oscillating harmonically in line with an incoming flow at a frequency equal to the natural frequency of vortex shedding induces for certain amplitudes of oscillation a chaotic state in the flow, characterized by an aperiodic lift force. The result is obtained through numerical simulation of the Navier-Stokes equations for two-dimensional flow. The chaos is attributed to the competition between two modes: the natural mode of the wake and the mode forced by the moving cylinder, which have entirely different spatial structures. forced by the moving cylinder, which have entirely different spatial structures. © 2009 American Institute of Physics. en
heal.publisher AMER INST PHYSICS en
heal.journalName Physics of Fluids en
dc.identifier.doi 10.1063/1.3258287 en
dc.identifier.isi ISI:000271358900005 en
dc.identifier.volume 21 en
dc.identifier.issue 10 en


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