Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/5617
Title: The effect of in-line oscillation on the forces of a cylinder vibrating in a steady flow
Authors: Πέππα, Σοφία
Καϊκτσής, Λάμπρος
Τριανταφύλλου, Γιώργος Σ.
Item type: Conference publication
Conference Item Type: Full Paper
Keywords: Oscillations;Force;Flow (Dynamics);Cylinders--Aerodynamics;Ταλαντώσεις;Ισχύ;Ροή (δυναμική);Κύλινδροι - Αεροδυναμική
Subjects: Marine engineering
Shipbuilding
Ναυτιλία
Ναυπηγική
Issue Date: 4-Feb-2015
1-Aug-2010
Abstract: In this paper we present a computational study of the forces acting on a circular cylinder vibrating both transversely and in-line to a uniform stream. The in-line vibration frequency is equal to twice the transverse frequency. The cylinder thus follows a figure-eight trajectory, emulating the trajectory of a free vortex-induced vibration. We consider three values of transverse oscillation frequency, in the regime of the natural frequency of the Kármán street, for a Reynolds number of 400. We find that the fluid forces are greatly influenced by the direction in which the figure-eight is traversed. We also find that the spectrum of the lift force is characterized by the strong presence of odd-numbered higher harmonics. Moreover, depending on the combination of oscillation amplitude and frequency, the lift force exhibits aperiodic time dependence.
Language: English
Citation: Peppa, S., Kaiktsis, L. and Triantafyllou, G.S. (2010). The effect of in-line oscillation on the forces of a cylinder vibrating in a steady flow. 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration and Noise, Vol.3(A and B), pp. 21-28 Montreal, Quebec, Canada, 1–5/08/2010. Available from: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1621645
Conference: 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration and Noise
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
URI: http://hdl.handle.net/11400/5617
Appears in Collections:Δημοσιεύσεις

Files in This Item:
File Description SizeFormat 
Peppa_et_al_FIV+N, FEDSM2010-ICNMM2010-30054.pdf
  Restricted Access
525.19 kBAdobe PDFView/Open Request a copy


This item is licensed under a Creative Commons License Creative Commons