Extreme small-scale clustering of droplets in turbulence driven by hydrodynamic interactions

M.A. Yavuz; R.P.J. Kunnen; G.J.F. Van Heijst; H.J.H. Clercx

doi:10.1103/PhysRevLett.120.244504

Extreme small-scale clustering of droplets in turbulence driven by hydrodynamic interactions

M.A. Yavuz, R.P.J. Kunnen, G.J.F. Van Heijst, H.J.H. Clercx

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Abstract

We perform three-dimensional particle tracking measurements on droplets in a turbulent airflow. The droplets display the well-known preferential concentration of inertial particles, with an additional extreme clustering at the smallest scales. We explain this additional clustering phenomenon theoretically based on a Stokes-flow description of two spheres including their mutual hydrodynamic interaction and a perturbative small-inertia expansion.

Original language	English
Article number	244504
Number of pages	5
Journal	Physical Review Letters
Volume	120
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.120.244504
Publication status	Published - 15 Jun 2018

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abstract = "We perform three-dimensional particle tracking measurements on droplets in a turbulent airflow. The droplets display the well-known preferential concentration of inertial particles, with an additional extreme clustering at the smallest scales. We explain this additional clustering phenomenon theoretically based on a Stokes-flow description of two spheres including their mutual hydrodynamic interaction and a perturbative small-inertia expansion.",

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AU - Clercx, H.J.H.

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Extreme small-scale clustering of droplets in turbulence driven by hydrodynamic interactions

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