All Physics Faculty Publications
Document Type
Article
Journal/Book Title/Conference
Physical Review E
Volume
51
Issue
2
Publisher
American Physical Society
Publication Date
2-1995
First Page
1119
Last Page
1127
Abstract
We investigate the onset of convection for chemical-wave propagation in the Belousov-Zhabotinsky reaction based on the two-variable Oregonator model coupled with the fluid dynamic equations. For chemical waves in a vertical slab, two-dimensional convection occurs only for slab widths greater than a critical threshold width. The convective threshold is different for ascending and descending waves. Convectionless waves are flat and propagate with constant speed. Above the onset of convection, the wave velocity increases and the flat wave deforms due to two counterrotating steady rolls. For a horizontal slab, convection is always present and the wave velocity increases with increasing slab width. Our results are compared with experiments.
Recommended Citation
"Convective Chemical-wave Propagation in the Belousov- Zhabotinsky Reaction," Y. Wu, D. A. Vasquez, B. F. Edwards, and J. W. Wilder, Phys. Rev. E, 51, 1119 (1995) [29].
Comments
http://link.aps.org/doi/10.1103/PhysRevE.51.1119Published by the American Physical Society in Physical Review E. Publisher PDF is available for download through the link above.