Streamline topology and dilute particle dynamics in a Karman vortex street flow

Details Streamline topology and dilute particle dynamics in a Karman vortex street flow Streamline topology and dilute particle dynamics in a Karman vortex street flow

2004-11-20

arxiv.org/abs/physics/0411191v2

Int. J. Bifur. Chaos, Vol. 13, No. 5, pp. 1275-1286 (2003)

Physics

Fluid Dynamics

16 pages, 9 figures

Scientific paper

Three types of streamline topology in a Karman vortex street flow are shown under the variation of spatial parameters. For the motion of dilute particles in the K\'arm\'an vortex street flow, there exist a route of bifurcation to a chaotic orbit and more attractors in a bifurcation diagram for the proportion of particle density to fluid density. Along with the increase of spatial parameters in the flow filed, the bifurcation process is suspended, as well as more and more attractors emerge. In the motion of dilute particles, a drag term and gravity term dominate and result in the bifurcation phenomenon.

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