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Dynamics and Selection of Giant Spirals in Rayleigh-Benard Convection

Brendan B. Plapp·David A. Egolf·Eberhard Bodenschatz·Werner Pesch
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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.

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Brendan B. Plapp, David A. Egolf, Eberhard Bodenschatz, Werner Pesch. 1998-08-07. Dynamics and Selection of Giant Spirals in Rayleigh-Benard Convection. https://doi.org/10.1103/physrevlett.81.5334

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