Vortex-front propagation in Rayleigh-Bénard convection

Jay Fineberg; Victor Steinberg

doi:10.1103/PhysRevLett.58.1332

Vortex-front propagation in Rayleigh-Bénard convection

Jay Fineberg^*
, Victor Steinberg

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

76 Scopus citations

Abstract

We present experimental measurements of the velocity of a convective vortex front propagating into an unstable conductive state in a Rayleigh-Bénard system for the wide range of μ (μ"T/"Tc-1) between 4×10-4 and 2.5×10-1. The results are found to be in excellent quantitatitve agreement with the theoretical predictions following from an amplitude equation, exhibiting a sharp selection mechanism in the propagation velocity. Wave-number selection by this dynamical mechanism is also studied.

Original language	English
Pages (from-to)	1332-1335
Number of pages	4
Journal	Physical Review Letters
Volume	58
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.58.1332
State	Published - 1987
Externally published	Yes

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10.1103/PhysRevLett.58.1332

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AB - We present experimental measurements of the velocity of a convective vortex front propagating into an unstable conductive state in a Rayleigh-Bénard system for the wide range of μ (μ"T/"Tc-1) between 4×10-4 and 2.5×10-1. The results are found to be in excellent quantitatitve agreement with the theoretical predictions following from an amplitude equation, exhibiting a sharp selection mechanism in the propagation velocity. Wave-number selection by this dynamical mechanism is also studied.

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Vortex-front propagation in Rayleigh-Bénard convection

Abstract

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