Articles producció científica> Enginyeria Mecànica

Experimental and numerical investigation of the flow in a cylindrical cavity with an unsteady rotating lid

  • Datos identificativos

    Identificador: imarina:9247141
    Autores:
    David, J SVernet, AGrau, F XPallares, J
    Resumen:
    In this paper, we analyse the flowin a cylindrical cavity of aspect ratioH/R = 2, with a top lid rotating with a sinusoidal time-varying speed. The Reynolds numbers, based on the time-averaged rotating speed and the radius of the cavity (Re = Omega R-0(2)/nu) are 2800, 3500 and 4100. Particle Image velocimetry measurements and numerical simulations are performed to determine the effect on the flow of different imposed frequencies on the rotating lid. The acceleration and deceleration of the lid produce a marked pulsatile flow behaviour. It is found that at low Reynolds numbers the frequencies measured in the flow coincide with the frequency imposed on the rotating lid, while at the largest Re considered the flow frequencies are significantly lower, especially when the frequency of the disk is large. The fluctuations induced in the vertical velocity component are about 100% of the instantaneous values while for the angular component the fluctuations are of the same order as the instantaneous values.
  • Otros:

    Autor según el artículo: David, J S; Vernet, A; Grau, F X; Pallares, J
    Departamento: Enginyeria Mecànica
    Autor/es de la URV: Grau Vidal, Francesc Xavier / Pallarés Curto, Jorge María / Vernet Peña, Antonio
    Palabras clave: Topology Simulations Periodic-flow Onset Enclosed cylinder Chaotic advection Cellular-flow Bubbles Axisymmetrical vortex breakdown
    Resumen: In this paper, we analyse the flowin a cylindrical cavity of aspect ratioH/R = 2, with a top lid rotating with a sinusoidal time-varying speed. The Reynolds numbers, based on the time-averaged rotating speed and the radius of the cavity (Re = Omega R-0(2)/nu) are 2800, 3500 and 4100. Particle Image velocimetry measurements and numerical simulations are performed to determine the effect on the flow of different imposed frequencies on the rotating lid. The acceleration and deceleration of the lid produce a marked pulsatile flow behaviour. It is found that at low Reynolds numbers the frequencies measured in the flow coincide with the frequency imposed on the rotating lid, while at the largest Re considered the flow frequencies are significantly lower, especially when the frequency of the disk is large. The fluctuations induced in the vertical velocity component are about 100% of the instantaneous values while for the angular component the fluctuations are of the same order as the instantaneous values.
    Áreas temáticas: Mechanics Mechanical engineering Matemática / probabilidade e estatística Interdisciplinar Engenharias iii Engenharias i Computational mechanics Ciência da computação Astronomia / física
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: anton.vernet@urv.cat francescxavier.grau@urv.cat jordi.pallares@urv.cat
    Identificador del autor: 0000-0002-7028-1368 0000-0002-4077-7338 0000-0003-0305-2714
    Fecha de alta del registro: 2024-10-12
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://link.springer.com/article/10.1007/s00707-022-03152-3
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Acta Mechanica. 233 (3): 1107-1124
    Referencia de l'ítem segons les normes APA: David, J S; Vernet, A; Grau, F X; Pallares, J (2022). Experimental and numerical investigation of the flow in a cylindrical cavity with an unsteady rotating lid. Acta Mechanica, 233(3), 1107-1124. DOI: 10.1007/s00707-022-03152-3
    DOI del artículo: 10.1007/s00707-022-03152-3
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2022
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Computational Mechanics,Mechanical Engineering,Mechanics
    Topology
    Simulations
    Periodic-flow
    Onset
    Enclosed cylinder
    Chaotic advection
    Cellular-flow
    Bubbles
    Axisymmetrical vortex breakdown
    Mechanics
    Mechanical engineering
    Matemática / probabilidade e estatística
    Interdisciplinar
    Engenharias iii
    Engenharias i
    Computational mechanics
    Ciência da computação
    Astronomia / física
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