Descripción
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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
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Si |
Nombre congreso
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23rd International Congress of Theoretical and Applied Mechanics |
Tipo de participación
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960 |
Lugar del congreso
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Beijing |
Revisores
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Si |
ISBN o ISSN
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978-988-16022-3-7 |
DOI
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Fecha inicio congreso
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19/08/2012 |
Fecha fin congreso
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24/08/2012 |
Desde la página
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1 |
Hasta la página
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7 |
Título de las actas
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ABSTRACT BOOK |