Memorias de investigación
Artículos en revistas:
On the Birth of Stall Cells on Airfoils
Año:2011
Áreas de investigación
  • Mecánica de fluidos,
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
Critical point theory asserts that two-dimensional topologies are defined as degeneracies and any three-dimensional disturbance of a two-dimensional flow will lead to a new three-dimensional flowfield topol- ogy, regardless of the disturbance amplitude. Here, the topology of the composite flowfields reconstructed by linear superposition of the two-dimensional flow around a stalled airfoil and the leading stationary three- dimensional global eigenmode has been studied. In the conditions monitored the two-dimensional flow is steady and laminar and is separated over a fraction of the suction side, while the amplitudes considered in the linear superposition are small enough for the linearization assumption to be valid. The multiple topological bifurcations resulting have been analysed in detail; the surface streamlines generated by the leading stationary global mode of the separated flow have been found to be strongly reminiscent of the characteristic stall cells, observed experimentally on airfoils just beyond stall in both laminar and turbulent flow.
Internacional
Si
JCR del ISI
Si
Título de la revista
Theoretical and Computational Fluid Dynamics
ISSN
0935-4964
Factor de impacto JCR
1,127
Información de impacto
Volumen
25 (1-4)
DOI
10.1007/s00162-010-0193-7
Número de revista
Desde la página
105
Hasta la página
117
Mes
SIN MES
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Mecánica de Fluidos Computacional
  • Departamento: Motopropulsión y Termofluidodinámica