Flow-driven instabilities in the Belousov–Zhabotinsky reaction: Modelling and experiments

Literature Information

Publication Date 2001-02-26
DOI 10.1039/B009379N
Impact Factor 3.676
Authors

R. Tóth, A. Papp, V. Gáspár, J. H. Merkin, S. K. Scott, A. F. Taylor


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Abstract

The development of propagating patterns arising from the differential flow of reactants through a tubular reactor is investigated. The results from a series of experimental runs, using the BZ reaction, are presented to show how the wavelength and propagation speed of the patterns depend on the imposed flow velocity and the concentration of BrO3− in the inflow. A model for this system, based on a two-variable Oregonator model for the BZ reaction, is considered. A stability analysis of the model indicates that the mechanism for pattern formation is through a convective instability. Numerical simulations confirm the existence of propagating patterns and are in reasonable agreement with the experimental observations.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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