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

  • Datos identificativos

    Identificador: imarina:6389438
    Autores:
    Jimenez-Gonzalez, J IHuera-Huarte, F J
    Resumen:
    © 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.
  • Otros:

    Autor según el artículo: Jimenez-Gonzalez, J I; Huera-Huarte, F J
    Departamento: Enginyeria Informàtica i Matemàtiques
    Autor/es de la URV: Huera Huarte, Francisco Javier
    Palabras clave: Vortex-induced vibrations Viv Passive control Cylinder wake
    Resumen: © 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.
    Áreas temáticas: 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
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0022460X
    Direcció de correo del autor: francisco.huera@urv.cat
    Identificador del autor: 0000-0002-5447-3183
    Fecha de alta del registro: 2024-10-12
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S0022460X18303560
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Journal Of Sound And Vibration. 431 163-176
    Referencia de l'ítem segons les normes 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
    DOI del artículo: 10.1016/j.jsv.2018.06.002
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2018
    Tipo de publicación: Journal Publications
  • Palabras clave:

    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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