Particle Aggregation in a turbulent Keplerian flow

Details Particle Aggregation in a turbulent Keplerian flow Particle Aggregation in a turbulent Keplerian flow

1998-10-21

arxiv.org/abs/astro-ph/9810336v2

Physics of Fluids, vol. 11, pp. 2280-2287

Astronomy and Astrophysics

Astrophysics

16 pages, 9 figures

Scientific paper

10.1063/1.870090

In the problem of planetary formation one seeks a mechanism to gather small solid particles together into larger accumulations of solid matter. Here we describe a scenario in which turbulence mediates this process by aggregating particles into anticyclonic regions. If, as our simulations suggest, anticyclonic vortices form as long-lived coherent structures, the process becomes more powerful because such vortices trap particles effectively. Even if the turbulence is decaying, following the upheaval that formed the disk, there is enough time to make the dust distribution quite lumpy.

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