Thursday, May 27

MS48
Chaotic Advection in Temporally Chaotic Flows

10:00 AM-12:00 PM
Room: Ballroom III

Advection in temporally periodic hydrodynamical flows has become one of the most appealing applications of chaos theory with an ample possibility of experimental investigations. In contrast to periodic flows, much less is known about the passive advection in temporally nonperiodic, most interestingly, chaotic flows. They are of course more general and have more potential applications including environmental ones. The aim of this minisymposium is to present concepts and approaches to describe advection in temporally chaotic flows and to characterize the degree of chaoticity of these processes, like the concept of indecomposable continua, the use of random maps, fractals, and the way to handle general time dependences.

Organizers: Miguel A. F. Sanjuan
Universidad Rey Juan Carlos, Mostoles-Madrid, Spain
Tamás Tél
Eötvös University, Budapest, Hungary

10:00-10:25 Indecomposable Continua in Fluid Flow Past an Array of Cylinders

Miguel A. F. Sanjuan, Organizer

10:30-10:55 Advection by Chaotically Time-Dependent Open Flows

Tamás Tél, Organizer

11:00-11:25 Mixing and Diffusion in Aperiodic Flows

George Haller, Brown University

11:30-11:55 The Fractal Nature of Vorticity at High Reynolds Number

Edward Ott, University of Maryland, College Park

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MMD, 2/9/99
LMH, 1/11/99; tjf, 2/3/99