Study of vortical structures in turbulent near-wall flows

Sophie Herpin, Sebastien Coudert, Jean-Marc Foucaut, Julio Soria, Michel Stanislas

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

Abstract

Streamwise and spanwise vortices are investigated in a database of nearwall turbulence constituted of SPIV data of boundary layer covering a large range of Reynolds numbers (Reθ ∈ [1300; 18950]).The detection algorithm is based on a fit of the velocity field surrounding extrema of swirling strength to an Oseen vortex. Some statistical results on the characteristics of the vortices (radius, vorticity, convection velocity, density) are investigated, giving some new insight into the organization of near-wall turbulence.

Original languageEnglish
Title of host publicationProgress in Wall Turbulence: Understanding and Modeling
Subtitle of host publicationProceedings of the WALLTURB International Workshop held in Lille, France, April 21–23, 2009
EditorsMichel Stanislas, Javier Jimenez, Ivan Marusic
PublisherSpringer
Pages121-131
Number of pages11
ISBN (Electronic)9789048196036
ISBN (Print)9789048196029
DOIs
Publication statusPublished - 2011
EventInternational Workshop on Understanding and Modelling of Wall Turbulence, 2009 - Lille, France
Duration: 21 Apr 200923 Apr 2009

Publication series

NameERCOFTAC Series
PublisherSpringer Netherlands
Volume14
ISSN (Print)1382-4309
ISSN (Electronic)2215-1826

Conference

ConferenceInternational Workshop on Understanding and Modelling of Wall Turbulence, 2009
CountryFrance
CityLille
Period21/04/0923/04/09

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