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arXiv · 1012.4381

Rotational intermittency and turbulence induced lift experienced by large particles in a turbulent flow

Robert Zimmermann·Yoann Gasteuil·Mickael Bourgoin·Romain Volk·Alain Pumir·Jean-Francois Pinton
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Abstract

The motion of a large, neutrally buoyant, particle, freely advected by a turbulent flow is determined experimentally. We demonstrate that both the translational and angular accelerations exhibit very wide probability distributions, a manifestation of intermittency. The orientation of the angular velocity with respect to the trajectory, as well as the translational acceleration conditioned on the spinning velocity provide evidence of a lift force acting on the particle.

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Robert Zimmermann, Yoann Gasteuil, Mickael Bourgoin, Romain Volk, Alain Pumir, Jean-Francois Pinton. 2010-12-20. Rotational intermittency and turbulence induced lift experienced by large particles in a turbulent flow. https://doi.org/10.1103/physrevlett.106.154501

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