Pressure gradient effect in natural convection boundary layers

Higuera Antón, Francisco y Liñán Martínez, Amable (1993). Pressure gradient effect in natural convection boundary layers. "Physics of Fluids. A, Fluid Dynamics", v. 5 (n. 10); pp. 2443-2453. ISSN 0899-8213.

Descripción

Título: Pressure gradient effect in natural convection boundary layers
Autor/es:
  • Higuera Antón, Francisco
  • Liñán Martínez, Amable
Tipo de Documento: Artículo
Título de Revista/Publicación: Physics of Fluids. A, Fluid Dynamics
Fecha: 1993
Volumen: 5
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Motopropulsión y Termofluidodinámica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (923kB) | Vista Previa

Resumen

The high Grashof number laminar natural convection flow around the lower stagnation point of a symmetric bowl- shaped heated body is analyzed. A region is identified where the direct effect on the flow of the component of the buoyancy force tangential to the body surface is comparable to the indirect effect of the component normal to the surface, which acts through the gradient of the nonuniform pressure that it induces in the boundary layer. Analysis of this region provides a description of the evolution of the flow from a pressure-gradient dominated regime to a buoyancy dominated regime. Numerical results are presented for the flows above and below heated power-law body shapes, and the upstream propagation of small perturbations to the stationary flow is discussed. An asymptotic analysis is carried out for the flow below nearly flat horizontal bodies, for which the change from pressure-gradient-driven to buoyancy-driven flow occurs very rapidly in a short region. The influence of body edges located in the region of interest is also discussed.

Más información

ID de Registro: 1380
Identificador DC: http://oa.upm.es/1380/
Identificador OAI: oai:oa.upm.es:1380
URL Oficial: http://pof.aip.org/
Depositado por: Biblioteca ETSI Aeronauticos
Depositado el: 20 Feb 2009
Ultima Modificación: 20 Abr 2016 06:48
  • 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