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Memorias de investigación
Ponencias en congresos:
Time-resolved evolution of wall-bounded direct and inverse cascades in turbulent channels at Re$_\tau=4000$
Año:2013
Áreas de investigación
  • Turbulencia
Datos
Descripción
The temporal evolution of the structures responsible for the momentum transfer in a turbulent channel at Re_? = 4000 is studied using DNS sequences with temporal separations among fields short enough for individual objects to be tracked. Direct and inverse physical cascades are associated with the process of structures splitting and merging respectively. It is found that the direct cascade predominates, but both directions are roughly comparable. Most of the merged and split fragments have small sizes of the order of some Kolmogorov units. However, an inertial self-similar process is found in which the structures merge and split in fragments of comparable sizes. Finally, a link is established between places with high Reynolds stresses and the predominance of either the direct or the inverse cascade.
Internacional
Si
Nombre congreso
European Turbulence Conference 14
Tipo de participación
960
Lugar del congreso
Lyon (Francia)
Revisores
Si
ISBN o ISSN
0000-0000
DOI
Fecha inicio congreso
01/09/2013
Fecha fin congreso
04/09/2013
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0
Hasta la página
0
Título de las actas
Time-resolved evolution of wall-bounded direct and inverse cascades in turbulent channels at Re$_\tau=4000$
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Adrian Lozano Duran (UPM)
  • Autor: Javier Jimenez Sendin (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Mecánica de Fluidos Computacional
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