Lagrangian diffusion properties of the wake behind a cylinder using time-resolved particle tracking velocimetry

Conference paper (2022)

Authors

AR Khojasteh INRA Institut National de La Recherche Agronomique
Dominique Heitz Heitz INRA Institut National de La Recherche Agronomique
Lionel Fiabane INRA Institut National de La Recherche Agronomique
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Published Date

2022

Language

English

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Abstract

In the present study, we investigate the computation of the Lagrangian second-order structure-function to characterise the multiscale dynamics of turbulence from measured particle trajectories. We performed time-resolved three-dimensional particle tracking velocimetry (4D-PTV) to study the anisotropic and inhomogeneous flow field of the wake behind a cylinder at a Reynolds number equal to 3900. We performed Lagrangian statistical analysis on nearly 12000 trajectories for 4000 time steps.