Low frequency temperature forcing of chemical oscillations

J. Novak, B.W. Thompson, M.C.T. Wilson, A.F. Taylor, M.M. Britton

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Pages (from-to)12321-12327
JournalPhysical Chemistry Chemical Physics
Volume13
DOIs
Publication statusPublished - 3 Jun 2011

Fingerprint

Dive into the research topics of 'Low frequency temperature forcing of chemical oscillations'. Together they form a unique fingerprint.

Cite this