Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

IUTAM Symposium on Computational Approaches to Multiphase FlowAccumulation of Heavy Particles in Bounded Vortex Flow

IUTAM Symposium on Computational Approaches to Multiphase Flow: Accumulation of Heavy Particles... [Much research has been done on the motion of heavy particles in simple vortex flows. In most of this work, particle motion is investigated under the influence of fixed vortices. In the context of astrophysics, the motion of heavy particles in rotating two-dimensional flows has been investigated; the rotation follows from the laws of Kepler. In the present paper, the motion of heavy particles in potential vortex flow in a circular domain is investigated. The vortex describes a circular trajectory due to the presence of the boundary, so that a steadily rotating flow is obtained. In order to isolate the effect of particle inertia, only Stokes drag is taken into account in the equation of motion. The numerical simulations are based on a oneway coupling. They show that small heavy particles accumulate in an ellitpic region of the flow, counterrotating with respect to the vortex. When the particle Stokes number exceeds a threshold, depending on the vortex configuration, particles are expelled from the circular domain. A stability criterion for this particle accumulation is derived analytically. These results are qualitatively comparable to those obtained by others in astrophysics.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

IUTAM Symposium on Computational Approaches to Multiphase FlowAccumulation of Heavy Particles in Bounded Vortex Flow

Part of the Fluid Mechanics and Its Applications Book Series (volume 81)
Editors: Balachandar, S.; Prosperetti, A.
Ijzermans, Rutger H. A.; Hagmeijer, R.
IUTAM Symposium on Computational Approaches to Multiphase Flow — Jan 1, 2006
Download PDF
10 pages

Loading next page...
 
/lp/springer-journals/iutam-symposium-on-computational-approaches-to-multiphase-flow-uySkfhP98X
Publisher
Springer Netherlands
Copyright
© Springer 2006
ISBN
978-1-4020-4976-7
Pages
75 –85
DOI
10.1007/1-4020-4977-3_9
Publisher site
See Chapter on Publisher Site

Abstract

[Much research has been done on the motion of heavy particles in simple vortex flows. In most of this work, particle motion is investigated under the influence of fixed vortices. In the context of astrophysics, the motion of heavy particles in rotating two-dimensional flows has been investigated; the rotation follows from the laws of Kepler. In the present paper, the motion of heavy particles in potential vortex flow in a circular domain is investigated. The vortex describes a circular trajectory due to the presence of the boundary, so that a steadily rotating flow is obtained. In order to isolate the effect of particle inertia, only Stokes drag is taken into account in the equation of motion. The numerical simulations are based on a oneway coupling. They show that small heavy particles accumulate in an ellitpic region of the flow, counterrotating with respect to the vortex. When the particle Stokes number exceeds a threshold, depending on the vortex configuration, particles are expelled from the circular domain. A stability criterion for this particle accumulation is derived analytically. These results are qualitatively comparable to those obtained by others in astrophysics.]

Published: Jan 1, 2006

Keywords: Stream Function; Stagnation Point; Heavy Particle; Point Vortex; Stokes Number

There are no references for this article.