OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Self-sustained processes in the logarithmic layer of turbulent channel flows

Hwang, Yongyun and Cossu, Carlo Self-sustained processes in the logarithmic layer of turbulent channel flows. (2011) Physics of Fluids, vol. 23 (n° 6). ISSN 1070-6631

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
538kB

Official URL: http://dx.doi.org/10.1063/1.3599157

Abstract

It has recently been shown that large-scale and very-large-scale motions can self-sustain in turbulent channel flows even in the absence of input from motions at smaller scales. Here we show that also motions at intermediate scales, mainly located in the logarithmic layer, survive when motions at smaller scales are artificially quenched. These elementary self-sustained motions involve the bursting and regeneration of sinuous streaks. This is a further indication that a full range of autonomous self-sustained processes exists in turbulent channel flows with scales ranging from those of the buffer layer streaks to those of the large scale motions in the outer layer.

Item Type:Article
Additional Information:Thanks to American Institute of Physics editor. The original PDF of the article can be found at Physics of Fluids website : http://scitation.aip.org/content/aip/journal/pof2
HAL Id:hal-00913029
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Ecole Polytechnique (FRANCE)
Laboratory name:
Statistics:download
Deposited By: Carlo COSSU
Deposited On:03 Dec 2013 09:22

Repository Staff Only: item control page