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Memorias de investigación
Communications at congresses:
LOW-DIMENSIONALMODELLING FOR OPTIMAL STREAKS IN THE BLASIUS BOUNDARY LAYER
Year:2012
Research Areas
  • Fluyd dynamics,
  • Mechanical aeronautics and naval engineering
Information
Abstract
This paper is concerned with the low dimensional structure of optimal streaks in the Blasius boundary layer. Optimal streaks are well known to exhibit an approximate self-similarity, namely the streamwise velocity re-scaled with their maximum remains almost independent of both the spanwise wavenumber and the streamwise coordinate. However, the reason of this self-similar behavior is still unexplained as well as unexploited. After revisiting the structure of the streaks near the leading edge singularity, two additional approximately self-similar relations involving the velocity components and their wall normal derivatives are identified. Based on these properties, we derive a low dimensional model with two degrees of freedom. The comparison with the results obtained from the linearized boundary layer equations shows that this model is consistent and provide good approximations.
International
Si
Congress
23rd International Congress of Theoretical and Applied Mechanics
960
Place
Beijing
Reviewers
Si
ISBN/ISSN
978-988-16022-3-7
Start Date
19/08/2012
End Date
24/08/2012
From page
1
To page
7
ABSTRACT BOOK
Participants
  • Autor: Maria Jesus Higuera Torron (UPM)
  • Autor: Jose Manuel Vega De Prada (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial
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