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Study of the vortical structures in turbulent near wall flow

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 (Req E [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.
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Submitted on : Monday, April 23, 2012 - 3:23:20 PM
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  • HAL Id : hal-00690441, version 1



Sophie Herpin, Sébastien Coudert, Jean-Marc Foucaut, Julio Soria, Michel Stanislas. Study of the vortical structures in turbulent near wall flow. WALLTURB workshop on "Understanding and modelling of wall turbulence", Apr 2009, Lille, France. ⟨hal-00690441⟩



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