Scaling and dynamics of “flow distributed oscillation patterns” in the Belousov–Zhabotinsky reaction

Literature Information

Publication Date 2002-01-15
DOI 10.1039/B107627B
Impact Factor 3.676
Authors

R. Tóth, V. Gáspár


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Abstract

The formation of “flow distributed oscillation” (FDO) patterns in the Belousov–Zhabotinsky (BZ) reaction is studied experimentally. We confirm the dependence of the pattern wavelength on the flow velocity and the concentration of the reactant species BrO3− and H+ as predicted in a previous study. We also report on the initial development of the FDO patterns. In contrast to simple interpretations, the patterns arise through a “wave splitting” mechanism in which a pair of counter-propagating wave pulses are created from a pacemaker site at some distance ahead of the pattern: one of these waves propagates with the flow and leaves the reactor, the other propagates against the flow and eventually settles to form the next band of the FDO pattern. This initiation mechanism is confirmed in numerical studies based on the Oregonator model. These computations also indicate the possibility of complex dynamics similar to the “resonance patterns” reported in studies of the propagation of BZ waves through capillary tubes.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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