Title:
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Brownian motion of spiral waves driven by spatiotemporal structured noise
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Author:
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Sendiña Nadal, Irene; Alonso Muñoz, Sergio; Pérez Muñuzuri, Vicente; Gómez-Gesteira, M.; Pérez Villar, Vicente; Ramírez Piscina, Laureano; Casademunt i Viader, Jaume; Sancho, José M.; Sagués i Mestre, Francesc
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Other authors:
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Universitat de Barcelona |
Abstract:
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Spiral chemical waves subjected to a spatiotemporal random excitability are experimentally and numerically investigated in relation to the light-sensitive Belousov-Zhabotinsky reaction. Brownian motion is identified and characterized by an effective diffusion coefficient which shows a rather complex dependence on the time and length scales of the noise relative to those of the spiral. A kinematically based model is proposed whose results are in good qualitative agreement with experiments and numerics. |
Subject(s):
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-Química física -Dinàmica de fluids -Física estadística -Physical chemistry -Statistical physics -Fluid dynamics |
Rights:
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(c) American Physical Society, 2000
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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