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

Perdikaris, PG; Kaiktsis, L; Triantafyllou, GS

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