Quantifying Turbulence-Induced Segregation of Inertial Particles
- 22 August 2008
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 101 (8), 084504
- https://doi.org/10.1103/physrevlett.101.084504
Abstract
Particles with different density from the advecting turbulent fluids cluster due to the different response of light and heavy particles to turbulent fluctuations. This study focuses on the quantitative characterization of the segregation of dilute polydisperse inertial particles evolving in turbulent flow, as obtained from direct numerical simulation of homogeneous isotropic turbulence. We introduce an indicator of segregation amongst particles of different inertia and/or size, from which a length scale , quantifying the segregation degree between two particle types, is deduced.
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