Chaotic wakes in flow past an oscillating cylinder

dc.contributor.author	Πέππα, Σοφία	el
dc.contributor.author	Καϊκτσής, Λάμπρος	el
dc.contributor.author	Τριανταφύλλου, Γιώργος Σ.	el
dc.date.accessioned	2015-02-04T10:46:21Z
dc.date.issued	2015-02-04
dc.identifier.uri	http://hdl.handle.net/11400/5612
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	Cylinder oscillating
dc.subject	Transverse frequency
dc.subject	Vibrations
dc.subject	Κύλινδρος ταλάντωσης
dc.subject	Εγκάρσια συχνότητα
dc.subject	Δονήσεις
dc.title	Chaotic wakes in flow past an oscillating cylinder	en
heal.type	conferenceItem
heal.classification	Marine engineering
heal.classification	Shipbuilding
heal.classification	Ναυτιλία
heal.classification	Ναυπηγική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85081157
heal.classificationURI	http://zbw.eu/stw/descriptor/13066-5
heal.classificationURI	N/A-Ναυτιλία
heal.classificationURI	N/A-Ναυπηγική
heal.keywordURI	http://skos.um.es/unesco6/220111
heal.dateAvailable	10000-01-01
heal.language	en
heal.access	forever
heal.recordProvider	Τ.Ε.Ι. Αθήνας, Σχολή Τεχνολογικών Εφαρμογών, Τμήμα Ναυπηγών Μηχανικών	el
heal.publicationDate	2010-06
heal.bibliographicCitation	Peppa, S., Kaiktsis, L. and Triantafyllou, G.S. (2010). Chaotic wakes in flow past an oscillating cylinder. 6th Conference on Bluff Body Wakes and Vortex Induced Vibrations, Capri Island Italy, 06/2010.	en
heal.abstract	In this paper we present computational results of the flow past a cylinder oscillating transversely and in-line to a uniform stream. The in-line oscillation has a frequency equal to twice the transverse frequency. The cylinder thus follows an eight-like trajectory, emulating the response of real structures undergoing vortex-induced vibrations. Here, the transverse oscillation frequency obtains values close to the natural frequency of the Kármán vortex street, while the corresponding oscillation amplitude is varied from zero to 0.6 times the cylinder diameter. We find that certain combinations of oscillation frequency and amplitude result in chaotic wakes, characterized by chaotic lift spectra. We attribute the chaotic flow behavior to the presence of cylinder oscillation in the in-line direction, which forces a symmetric mode; the competition between this mode and the staggered Kármán mode induces the observed chaotic states.	en
heal.fullTextAvailability	true
heal.conferenceName	6th Conference on Bluff Body Wakes and Vortex Induced Vibrations	en
heal.conferenceItemType	full paper