Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2008-02-05
Phys. Rev. Lett. 101, 084504 (2008)
Nonlinear Sciences
Chaotic Dynamics
4 pages, 5 figures
Scientific paper
10.1103/PhysRevLett.101.084504
Particles with density different from that of the advecting turbulent fluid cluster due to the different response of light/heavy particles to turbulent fluctuations. This study focuses on the quantitative characterization of the segregation of dilute poly-disperse inertial particles evolving in turbulent flow, as obtained from Direct Numerical Simulation of the Navier-Stokes equations. We introduce an indicator of segregation amongst particles of different inertia and/or size, from which a length scale r_{seg} quantifying the degree of segregation of two different types of particles is deduced.
Calzavarini Enrico
Cencini Massimo
Lohse Detlef
Toschi Federico
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