Low frequency temperature forcing of chemical oscillations

Jan Novak; BW Thompson; MCT Wilson; AF Taylor; Melanie Britton

doi:10.1039/c1cp21096c

Low frequency temperature forcing of chemical oscillations

Jan Novak, BW Thompson, MCT Wilson, AF Taylor, Melanie Britton

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Abstract

The low frequency forcing of chemical oscillations by temperature is investigated experimentally in the Belousov-Zhabotinsky (BZ) reaction and in simulations of the Oregonator model with Arrhenius temperature dependence of the rate constants. Forcing with temperature leads to modulation of the chemical frequency. The number of response cycles per forcing cycle is given by the ratio of the natural frequency to the forcing frequency and phase locking is only observed in simulations when this ratio is a whole number and the forcing amplitude is small. The global temperature forcing of flow-distributed oscillations in a tubular reactor is also investigated and synchronisation is observed in the variation of band position with the external signal, reflecting the periodic modulation of chemical oscillations by temperature.

Original language	English
Pages (from-to)	12321-12327
Number of pages	7
Journal	Physical Chemistry Chemical Physics
Volume	13
Issue number	26
DOIs	https://doi.org/10.1039/c1cp21096c
Publication status	Published - 1 Jan 2011

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10.1039/c1cp21096c

Chemistry in Flow : Amplification versus Extinction
Britton, M.
Engineering & Physical Science Research Council
16/10/08 → 15/04/12
Project: Research Councils

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title = "Low frequency temperature forcing of chemical oscillations",

abstract = "The low frequency forcing of chemical oscillations by temperature is investigated experimentally in the Belousov-Zhabotinsky (BZ) reaction and in simulations of the Oregonator model with Arrhenius temperature dependence of the rate constants. Forcing with temperature leads to modulation of the chemical frequency. The number of response cycles per forcing cycle is given by the ratio of the natural frequency to the forcing frequency and phase locking is only observed in simulations when this ratio is a whole number and the forcing amplitude is small. The global temperature forcing of flow-distributed oscillations in a tubular reactor is also investigated and synchronisation is observed in the variation of band position with the external signal, reflecting the periodic modulation of chemical oscillations by temperature.",

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AU - Novak, Jan

AU - Thompson, BW

AU - Wilson, MCT

AU - Taylor, AF

AU - Britton, Melanie

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N2 - The low frequency forcing of chemical oscillations by temperature is investigated experimentally in the Belousov-Zhabotinsky (BZ) reaction and in simulations of the Oregonator model with Arrhenius temperature dependence of the rate constants. Forcing with temperature leads to modulation of the chemical frequency. The number of response cycles per forcing cycle is given by the ratio of the natural frequency to the forcing frequency and phase locking is only observed in simulations when this ratio is a whole number and the forcing amplitude is small. The global temperature forcing of flow-distributed oscillations in a tubular reactor is also investigated and synchronisation is observed in the variation of band position with the external signal, reflecting the periodic modulation of chemical oscillations by temperature.

AB - The low frequency forcing of chemical oscillations by temperature is investigated experimentally in the Belousov-Zhabotinsky (BZ) reaction and in simulations of the Oregonator model with Arrhenius temperature dependence of the rate constants. Forcing with temperature leads to modulation of the chemical frequency. The number of response cycles per forcing cycle is given by the ratio of the natural frequency to the forcing frequency and phase locking is only observed in simulations when this ratio is a whole number and the forcing amplitude is small. The global temperature forcing of flow-distributed oscillations in a tubular reactor is also investigated and synchronisation is observed in the variation of band position with the external signal, reflecting the periodic modulation of chemical oscillations by temperature.

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DO - 10.1039/c1cp21096c

M3 - Article

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SP - 12321

EP - 12327

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 26

ER -

Low frequency temperature forcing of chemical oscillations

Abstract

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Chemistry in Flow : Amplification versus Extinction

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