Low-Dimensional Modelling for optimal streaks in the blasius boundary layer

Higuera, María y Vega de Prada, José Manuel (2012). Low-Dimensional Modelling for optimal streaks in the blasius boundary layer. En: "23rd International Congress of Theoretical and Applied Mechanics", 19/08/2012 - 24/08/2012, Beijing. pp. 1-7.

Descripción

Título: Low-Dimensional Modelling for optimal streaks in the blasius boundary layer
Autor/es:
  • Higuera, María
  • Vega de Prada, José Manuel
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 23rd International Congress of Theoretical and Applied Mechanics
Fechas del Evento: 19/08/2012 - 24/08/2012
Lugar del Evento: Beijing
Título del Libro: Proceedings of the 23rd International Congress of Theoretical and Applied Mechanics
Fecha: 19 Agosto 2012
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 20335
Identificador DC: http://oa.upm.es/20335/
Identificador OAI: oai:oa.upm.es:20335
URL Oficial: http://fluid.ippt.pan.pl/conference_proceedings/ICTAM2012/
Depositado por: Memoria Investigacion
Depositado el: 30 Abr 2014 18:10
Ultima Modificación: 28 Abr 2015 15:50
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