Effect of Aspect Ratio on the Three-Dimensional Global Instability Analysis of Incompressible Open Cavity Flows

Meseguer Garrido, Fernando; Vicente Buendia, Javier de; Valero Sánchez, Eusebio y Theofilis, Vassilios (2011). Effect of Aspect Ratio on the Three-Dimensional Global Instability Analysis of Incompressible Open Cavity Flows. En: "6th AIAA THeoretical Fluid Mechanics Conference", 27/06/2011 - 30/06/2011, Honolulu, Hawaii, USA. ISBN 978-1-62410-144-1. pp..

Descripción

Título: Effect of Aspect Ratio on the Three-Dimensional Global Instability Analysis of Incompressible Open Cavity Flows
Autor/es:
  • Meseguer Garrido, Fernando
  • Vicente Buendia, Javier de
  • Valero Sánchez, Eusebio
  • Theofilis, Vassilios
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 6th AIAA THeoretical Fluid Mechanics Conference
Fechas del Evento: 27/06/2011 - 30/06/2011
Lugar del Evento: Honolulu, Hawaii, USA
Título del Libro: Proceedings of 6th AIAA Theoretical Fluid Mechanics Conference
Fecha: 2011
ISBN: 978-1-62410-144-1
Materias:
Escuela: E.U.I.T. Aeronáutica (UPM) [antigua denominación]
Departamento: Vehículos Aeroespaciales [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img] PDF (Document Portable Format) - Acceso permitido solamente a usuarios en el campus de la UPM - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (3MB)

Resumen

The stability analysis of open cavity flows is a problem of great interest in the aeronautical industry. This type of flow can appear, for example, in landing gears or auxiliary power unit configurations. Open cavity flows is very sensitive to any change in the configuration, either physical (incoming boundary layer, Reynolds or Mach numbers) or geometrical (length to depth and length to width ratio). In this work, we have focused on the effect of geometry and of the Reynolds number on the stability properties of a threedimensional spanwise periodic cavity flow in the incompressible limit. To that end, BiGlobal analysis is used to investigate the instabilities in this configuration. The basic flow is obtained by the numerical integration of the Navier-Stokes equations with laminar boundary layers imposed upstream. The 3D perturbation, assumed to be periodic in the spanwise direction, is obtained as the solution of the global eigenvalue problem. A parametric study has been performed, analyzing the stability of the flow under variation of the Reynolds number, the L/D ratio of the cavity, and the spanwise wavenumber β. For consistency, multidomain high order numerical schemes have been used in all the computations, either basic flow or eigenvalue problems. The results allow to define the neutral curves in the range of L/D = 1 to L/D = 3. A scaling relating the frequency of the eigenmodes and the length to depth ratio is provided, based on the analysis results.

Más información

ID de Registro: 13077
Identificador DC: http://oa.upm.es/13077/
Identificador OAI: oai:oa.upm.es:13077
URL Oficial: http://arc.aiaa.org/doi/book/10.2514/MTFC11
Depositado por: Memoria Investigacion
Depositado el: 04 Dic 2012 10:43
Ultima Modificación: 22 Sep 2014 10:57
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM