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Article Dans Une Revue Procedia IUTAM Année : 2017

A cost-efficient Shadow Particle Tracking Velocimetry setup suitable for tracking small objects in a large volume

Résumé

We use a Shadow Particle Tracking Velocimetry technique (S-PTV) with collimated light to investigate the dynamics of a turbulent von Kármán (VK) flow in water. Such a PTV technique permits easy calibration since the apparent particle positions on the images do not depend on the camera-particle distance and tracking of small objects (100 μm particles, fibers, ...) with low power LEDs light sources is made possible in a large volume (approximately (6 cm) 3). This technique provides an ensemble of Lagrangian trajectories which are conditioned in space on a grid in order to reconstruct the 3d Eulerian mean flow together with its fluctuations. Typical Lagrangian statistics can also be obtained with this technique, such as velocity and acceleration auto-correlation functions.
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Dates et versions

hal-02477858 , version 1 (13-02-2020)

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Peter Huck, Nathanaël Machicoane, Romain Volk. A cost-efficient Shadow Particle Tracking Velocimetry setup suitable for tracking small objects in a large volume. Procedia IUTAM, 2017, 20, pp.175 - 182. ⟨10.1016/j.piutam.2017.03.024⟩. ⟨hal-02477858⟩
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