BAROIS, Thomas; HUCK, Peter; PALEO, Charles; BOURGOIN, Mickaël; VOLK, Romain

doi:10.1063/1.5131207

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BAROIS, Thomas
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

HUCK, Peter
Laboratoire de Physique de l'ENS Lyon [Phys-ENS]

PALEO, Charles
Laboratoire de Physique de l'ENS Lyon [Phys-ENS]

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Physics of Fluids. 2019-12-01, vol. 31, n° 12, p. 125116

American Institute of Physics

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A vertical turbulent jet is used to trap chiral particles. The particles are maintained in levitation and a stationary rotation regime is observed. The model particles used are composed of a sphere and a helical tail. The rotating performance of the particles is investigated as a function of the length and the twisting of their tails. In addition, the flow field around a spherical particle trapped in the jet is characterized by a particle tracking velocimetry technique (3D-PTV). This flow characterization is used to compute the near-field velocity around a captured particle and to predict the rotation reported for the different geometries tested.< Leer menos

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Probing fluid torque with a hydrodynamical trap: Rotation of chiral particles levitating in a turbulent jet

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