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Instability and unsteadiness of aircraft wake vortices

Jacquin, L. and Fabre, D. and Sipp, D. and Theofilis, V. and Vollmers, H. (2003) Instability and unsteadiness of aircraft wake vortices. Aerospace Science and Technology, 7 (8), pp. 577-593.

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Abstract

This paper presents a review of theoretical and experimental results on stability and other unsteady properties of aircraft wakes. The basic mechanisms responsible for the propagation and the amplification of perturbation along vortices, namly the Kelvin waves and the cooperative instabilities, are first detailed. These two generic unsteady mechanisms are described by considering asymptotic linear stability analysis of model flows such as vortex filaments or Lamb-Oseen vortices. Extension of the linear anallysis to more representative flows, using a biglobal stability approach, is also descrbed. Experimental results obtained using LDV, hot wire and PIV in wind tunneles are presented and they are commented upon the light of theory.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2004,
Title:Instability and unsteadiness of aircraft wake vortices
Authors:
AuthorsInstitution or Email of Authors
Jacquin, L.NERA, F
Fabre, D.MFT, F
Sipp, D.niseridad Politécnica de Madrid, E
Theofilis, V.UNSPECIFIED
Vollmers, H.UNSPECIFIED
Date:2003
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:7
Page Range:pp. 577-593
Status:Published
Keywords:Aircraft wake, Vortex dynamics, Stability theory, Nonparallel global stability theory, Unsteady flow, Turbulence, Laser velocimetry, Hot wire velocimetry, Particle image velocimetry
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: elib DLR-Beauftragter
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:26

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