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Superdiffusive wave front propagation in a chemical active flow

European Physical Journal: Special Topics, ISSN: 1951-6355, Vol: 165, Issue: 1, Page: 169-174
2008
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Article Description

We present experiments on the propagation of a wave front in a fluid forced by Faraday waves. The vertical periodical modulation of the acceleration induces flows in the system that modifies the Belousov-Zhabotinsky (BZ) chemical reaction dynamics. Phase waves spreading through standing waves with different symmetries results in superdiffusion. The anomalous diffusion is characterized in terms of a non-integer transport exponent which is compared with exponents resulting from tracer particles trajectories undergoing rapid, distant jumps called Lévy flights. © EDP Sciences and Springer 2008.

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