Dynamics and Selection of Giant Spirals in Rayleigh-Benard Convection

Abstract

For Rayleigh-Benard convection of a fluid with Prandtl number σ\approx 1, we report experimental and theoretical results on a pattern selection mechanism for cell-filling, giant, rotating spirals. We show that the pattern selection in a certain limit can be explained quantitatively by a phase-diffusion mechanism. This mechanism for pattern selection is very different from that for spirals in excitable media.

References in corpus (2)

• Continuum-type stability balloon in oscillated granular layers
• Spiral Dynamics in Pattern-Forming Systems: Mean Flow Effects

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