Selective Sensitivity of Open Chaotic Flows on Inertial Tracer Advection: Catching Particles with a Stick
- 25 September 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 89 (16) , 164501
- https://doi.org/10.1103/physrevlett.89.164501
Abstract
We investigate the effects of finite size and inertia of a small spherical particle immersed in an open unsteady flow which, for ideal tracers, generates transiently chaotic trajectories. The inertia effects may strongly modify the chaotic motion to the point that attractors may appear in the configuration space. These studies are performed in a model of the two-dimensional flow past a cylindrical obstacle. The relevance to modeling efforts of biological pathogen transport in large-scale flows is discussed. Since the tracer dynamics is sensitive to the particle inertia and size, simple geometric setups in such flows could be used as a particle mixture segregator separating and trapping particles.Keywords
This publication has 16 references indexed in Scilit:
- Intermittent Distribution of Inertial Particles in Turbulent FlowsPhysical Review Letters, 2001
- Attraction of Minute Particles to Invariant Regions of Volume Preserving Flows by TransientsPhysical Review Letters, 2001
- Review—The Transient Equation of Motion for Particles, Bubbles, and DropletsJournal of Fluids Engineering, 1997
- Particle Dispersion in Flowing Gases—1994 Freeman Scholar LectureJournal of Fluids Engineering, 1996
- Fluid Dynamics of Sprays—1992 Freeman Scholar LectureJournal of Fluids Engineering, 1993
- The force exerted on a body in inviscid unsteady non-uniform rotational flowJournal of Fluid Mechanics, 1988
- The motion of small spherical particles in a cellular flow fieldPhysics of Fluids, 1987
- Equation of motion for a small rigid sphere in a nonuniform flowPhysics of Fluids, 1983
- Behaviour of macroscopic rigid spheres in Poiseuille flow Part 1. Determination of local concentration by statistical analysis of particle passages through crossed light beamsJournal of Fluid Mechanics, 1962
- Radial Particle Displacements in Poiseuille Flow of SuspensionsNature, 1961