Articles producció científica> Enginyeria Informàtica i Matemàtiques

Vortex-induced vibrations of a circular cylinder with a pair of control rods of varying size

  • Identification data

    Identifier: imarina:6389438
    Authors:
    Jimenez-Gonzalez, J IHuera-Huarte, F J
    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.
  • Others:

    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
  • Keywords:

    Acoustics,Acoustics and Ultrasonics,Condensed Matter Physics,Engineering, Mechanical,Mechanical Engineering,Mechanics,Mechanics of Materials
    Vortex-induced vibrations
    Viv
    Passive control
    Cylinder wake
    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
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