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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
Entidad
International Union of Theoretical and applied Mechanics
Lugar
Beijing
Páginas
2
Referencia/URL
http://fluid.ippt.pan.pl/conference_proceedings/ICTAM2012/
Tipo de publicación
Proceeding
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Maria Jesus Higuera Torron (UPM)
  • Autor: Jose Manuel Vega De Prada (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial
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