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Memorias de investigación
Communications at congresses:
Low-Dimensional Modal Description of Optimal Streaks
Year:2008
Research Areas
  • Fluid mechanics
Information
Abstract
Streaky perturbations play an essential role in the destabilization of boundary layers, especially in the presence of free-stream turbulence. These perturbations are calculated in terms of a streamwise evolving parabolic problem. Using the asymptotic behaviour of the solutions near the leading edge singularity, we obtain a low-dimensional modal description of the streaks in the case of a boundary layer attached to a flat plate. Comparison with optimal streaks obtained via the adjoint gradient (Luchini, JFM 2000), seems to indicate that the development of the instability may be understood on the basis of appropriate amplitude equations giving the streamwise evolution of the amplitudes of the relevant modes.
International
Si
Congress
61st Annual Meeting of the APS Division of Fluid Dynamics.
960
Place
San Antonio, Texas, EE.UU
Reviewers
Si
ISBN/ISSN
0003-0503
Start Date
23/11/2008
End Date
25/11/2008
From page
126
To page
126
Bulletin of the American Physical Society, Division of Fluids Dynamics. 'Low-Dimensional Modal Descriptionof Optimal Streaks'.
Participants
  • Autor: Jose Manuel Vega De Prada (UPM)
  • Autor: Maria Jesus Higuera Torron (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial
  • Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica
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