2007/06/30 by Rafael D. Vilela, Adilson E. Motter · 1 citation
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Aeolian processes and effects #Fluid Dynamics and Turbulent Flows #Particle Dynamics in Fluid Flows #astro-ph #nlin.CD #physics.flu-dyn
paper · pdf · doi:10.1103/physrevlett.99.264101
published as Phys. Rev. Lett. 99, 264101 (2007) · Animation available at http://www.pks.mpg.de/~rdvilela/leapfrogging.html
openalex publication_date 2007/12/28 · arxiv created 2008/01/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The fate of aerosols in open flows is relevant in a variety of physical contexts. Previous results are consistent with the assumption that such finite-size particles always escape in open chaotic advection. Here we show that a different behavior is possible. We analyze the dynamics of aerosols both in the absence and presence of gravitational effects, and both when the dynamics of the fluid particles is hyperbolic and nonhyperbolic. Permanent trapping of aerosols much heavier than the advecting fluid is shown to occur in all these cases. This phenomenon is determined by the occurrence of multiple vortices in the flow and is predicted to happen for realistic particle-fluid density ratios.