Author, as appears in the article.: Jimenez-Gonzalez, J I; Huera-Huarte, F J
Department: Enginyeria Informàtica i Matemàtiques
URV's Author/s: Huera Huarte, Francisco Javier
Keywords: Vortex-induced vibrations Viv Passive control Cylinder wake
Abstract: © 2018 Elsevier Ltd We present an experimental study on the vortex-induced vibration (VIV) of a low mass-damping one-degree-of-freedom circular cylinder subject to uniform cross-flow, with pairs of control rods of varying size located in its wake. Two particular locations for control rods, selected according to recent experimental maps of VIV sensitivity to localized perturbations, have been tested for increasing control rod diameters, d. Important amplitude reductions are observed for all arrangements investigated, with nearly total suppression of oscillations (up to 90%) for control rods of d = 0.4D, where D is the diameter of the main cylinder. Force measurements have been used to describe the nature of changes observed in the wake and the mechanisms behind the VIV control. In general, the placement of control rod pairs in the near wake leads to an important weakening of the lift coefficient and alters substantially the phase between transverse force and cylinder displacement. Moreover, it is shown that, for some particular arrangements, attenuation of VIV is obtained along with a drag reduction of approximately 60% at the upper branch of amplitude response, rendering the present strategy an interesting and practical solution for VIV control when several cylinders need to be installed together.
Thematic Areas: Psicología Mechanics of materials Mechanics Mechanical engineering Materiais Matemática / probabilidade e estatística Interdisciplinar Engineering, mechanical Engenharias iv Engenharias iii Engenharias ii Engenharias i Condensed matter physics Ciência da computação Astronomia / física Arquitetura e urbanismo Acoustics and ultrasonics Acoustics
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0022460X
Author's mail: francisco.huera@urv.cat
Author identifier: 0000-0002-5447-3183
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0022460X18303560
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Journal Of Sound And Vibration. 431 163-176
APA: Jimenez-Gonzalez, J I; Huera-Huarte, F J (2018). Vortex-induced vibrations of a circular cylinder with a pair of control rods of varying size. Journal Of Sound And Vibration, 431(), 163-176. DOI: 10.1016/j.jsv.2018.06.002
Article's DOI: 10.1016/j.jsv.2018.06.002
Entity: Universitat Rovira i Virgili
Journal publication year: 2018
Publication Type: Journal Publications