Sunday, May 18

7:00 PM-9:00 PM Ballroom I - Level B

Spiral-Wave Domains and Filaments: Experiments, Numerics, Theory

The problems of spiral-wave stability and dynamics in two and three dimensions benefit from the interaction of different approaches and on the feedback from its diverse applications. The speakers in this minisymposium bring to bear a variety of methods on these problems. Methods employed include experimental studies of chemical reactions and of specially designed excitable media, numerical work on amplitude and few-species reaction-diffusion equations, and in one case, comparison of numerics with biological patterns. Applications are a main feature of this minisymposium. At least three of the speakers present experimental data, and two speakers will present numerical simulations of three-dimensional patterns. Since the methods vary wildly among the speakers, we are interested in the spectrum of problems encountered and surmounted.

Organizer: Gregory Huber
University of Chicago

7:00 Scaling Relations in Chemical Spirals: Selection and Dispersion
Andrew Belmonte, University of Pittsburgh; Jean-Marc Flesselles, Laboratoire PMMH, ESPCI, France; Vilmos Gaspar, Kossuth Lajos University, Hungary; and Qi Ouyang, Institute Non-Lineaire de Nice, France
7:30 Control of Spiral Territories in Dictyostelium
Herbert Levine, University of California, San Diego
8:00 The Dynamics of Scroll Wave Filaments in the Complex Ginzburg-Landau Equation
Michael Gabbay, Edward Ott, and Parvez Guzdar, University of Maryland, College Park
8:30 Optical Tomography of Chemical Waves in Three Dimensions
Arthur T. Winfree, University of Arizona

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TMP, 4/3/97