Memorias de investigación
Ponencias en congresos:
LOW-DIMENSIONALMODELLING FOR OPTIMAL STREAKS IN THE BLASIUS BOUNDARY LAYER
Año:2012
Áreas de investigación
  • Dinamica de fluidos,
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
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.
Internacional
Si
Nombre congreso
23rd International Congress of Theoretical and Applied Mechanics
Tipo de participación
960
Lugar del congreso
Beijing
Revisores
Si
ISBN o ISSN
978-988-16022-3-7
DOI
Fecha inicio congreso
19/08/2012
Fecha fin congreso
24/08/2012
Desde la página
1
Hasta la página
7
Título de las actas
ABSTRACT BOOK
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial