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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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.
|Title:||Instability and unsteadiness of aircraft wake vortices|
|Journal or Publication Title:||Aerospace Science and Technology|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 577-593|
|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|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L VU - Air Traffic and Environment|
|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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