Core Dynamics of Multi-Armed Spirals in Rayleigh-Benard Convection
Preprint
- 14 February 1996
Abstract
We report experimental observations of the core dynamics of multi-armed, rotating spirals in Rayleigh-Benard convection for a fluid with Prandtl number near one. In addition to the large-scale rotation of the spirals, we found a cyclic core motion within a central area of radius r = appr. (n lambda/2), where n is the number of spiral arms ending in the core and lambda is the wavelength of the pattern. The dynamics of the core was much faster than the large-scale spiral rotation. We observed multi-armed spirals for which the two periods were commensurate and others for which they were incommensurate.Keywords
All Related Versions
- Version 1, 1996-02-14, ArXiv
- Published version: Physica Scripta, T67, 111.
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