Vortex Flows and Related Numerical Methods II
ESAIM: Proceedings, Vol. 1, 1996, pp. 279-294
Wake Vortices Behavior Near the Ground
Alexandre Corjon and Thierry Poinsot
-
Department of Fluid Mechanics
CERFACS, 42 G. Coriolis Ave, F-31057
Toulouse Cedex, France
Abstract
Direct numerical simulations of a vortex pair embedded in a stable atmospheric boundary layer are presented. The effects of various crosswind conditions are studied. These computations demonstrate the creation of secondary vortices for the range of Reynolds numbers (
).
The physics of wake vortex interactions with the
ground for different values of crosswind are discussed. The
redistribution of vorticity between the atmospheric boundary layer and the
vorticity induced by the primary vortices may explain the vortex tilting
phenomenon. A parametrization of the effect of crosswind on the minimum
altitude reached by the two vortices is given.
- DVI (44 kB) (without figures)
- PS (787 kB)
- Compressed Ps (193 kB)
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