The rollup of a vortex layer near a wall
Publicado en:Journal Of Fluid Mechanics. 248 297-313 - 1993-01-01 248(), DOI: 10.1017/S0022112093000783
Autores: Jimenez J
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Resumen
The behaviour of an inviscid vortex layer of non-zero thickness near a wall is studied, both through direct numerical simulation of the two-dimensional vorticity equation at high Reynolds numbers, and using an approximate ordinary nonlinear integrodifferential equation which is satisfied in the limit of a thin layer under long-wavelength perturbations. For appropriate initial conditions the layer rolls up and breaks into compact vortices which move along the wall at constant speed. Because of the effect of the wall, they correspond to equilibrium counter-rotating vortex dipoles. This breakup can be related to the disintegration of the initial conditions of the approximate nonlinear dispersive equation into solitary waves. The study is motivated by the formation of longitudinal vortices from vortex sheets in the wall region of a turbulent channel. © 1993, Cambridge University Press. All rights reserved.
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2025-06-01:
- Open Alex: 39
- WoS: 25
- Scopus: 31
- OpenCitations: 29
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Este trabajo se ha realizado con colaboración internacional, concretamente con investigadores de: Italy.
Existe un liderazgo significativo ya que algunos de los autores pertenecientes a la institución aparecen como primer o último firmante, se puede apreciar en el detalle: Primer Autor (JIMENEZ SENDIN, JAVIER) y Último Autor (JIMENEZ SENDIN, JAVIER).