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Direct numerical simulation of particle transport by hairpin vortices in a laminar boundary layer

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.680
pages 632-643

M. Prevel
Laboratoire de Mécanique des Fluides et d’Acoustique, Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Ecole Centrale de Lyon, INSA de Lyon,43 Boulevard du 11 novembre 1918, 69622 VilleurbanneCedex, France

Ivana Vinkovic
Laboratoire de Mécanique des Fluides et d'Acoustique, Université de Lyon, Université Claude Bernard Lyon 1, Ecole Centrale de Lyon, INSA de Lyon, CNRS UMR 5509, 36 Avenue Guy de Collongue, F-69134 Ecully, France

D. Doppler
Laboratoire de Mécanique des Fluides et d’Acoustique, Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Ecole Centrale de Lyon, INSA de Lyon, 43 Boulevard du 11 novembre 1918, 69622 Villeurbanne Cedex, France

M. Buffat
Laboratoire de Mécanique des Fluides et d’Acoustique, Université de Lyon, Université Claude Bernard Lyon 1, Ecole Centrale de Lyon, INSA de Lyon, CNRS UMR 5509, 36 Avenue Guy de Collongue, F-69134 Ecully, France

Abstract

The interaction between solid particles and turbulentwall structures is studied here. This phenomenon is present in numerous environmental flows. The flow above a wall-mounted hemisphere is used for generating hairpin vortices in a controlled way. By means of direct numerical simulation (DNS) and simultaneous Lagrangian tracking of particles, the interaction between solid particles released in the wake of the obstacle and hairpin vortices is analysed.

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