Low frequency temperature forcing of chemical oscillations
Low frequency temperature forcing of chemical oscillations
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.
12321-12327
Novak, Jan
fbe41cc7-0e19-45f1-bbd2-947f08ad7a55
Thompson, Barnaby W.
a23f175a-7c6c-44ed-9108-1902f0348fc7
Wilson, Mark C.T.
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Taylor, Annette F.
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Britton, Melanie M.
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3 June 2011
Novak, Jan
fbe41cc7-0e19-45f1-bbd2-947f08ad7a55
Thompson, Barnaby W.
a23f175a-7c6c-44ed-9108-1902f0348fc7
Wilson, Mark C.T.
f5138b7f-5d54-46fa-a03f-b54fb843e21a
Taylor, Annette F.
08028a29-428d-4732-b6b1-f7a93389b386
Britton, Melanie M.
29f41f3f-7b7e-4c9f-8126-875cc9373bc3
Novak, Jan, Thompson, Barnaby W., Wilson, Mark C.T., Taylor, Annette F. and Britton, Melanie M.
(2011)
Low frequency temperature forcing of chemical oscillations.
Physical Chemistry Chemical Physics, 13 (26), .
(doi:10.1039/c1cp21096c).
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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Accepted/In Press date: 12 May 2011
Published date: 3 June 2011
Identifiers
Local EPrints ID: 499426
URI: http://eprints.soton.ac.uk/id/eprint/499426
ISSN: 1463-9076
PURE UUID: 52492066-8d41-4a98-8aff-7845f1f5a82f
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Date deposited: 19 Mar 2025 17:45
Last modified: 20 Mar 2025 03:12
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Contributors
Author:
Jan Novak
Author:
Barnaby W. Thompson
Author:
Mark C.T. Wilson
Author:
Annette F. Taylor
Author:
Melanie M. Britton
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