Oscillatory and stationary convective patterns in a reaction driven gravity current |
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Authors: | Miholics Orsika Rica Tamás Horváth Dezso Tóth Ágota |
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Affiliation: | Department of Physical Chemistry and Materials Science, University of Szeged, Aradi vértanúk tere 1., Szeged, H-6720, Hungary. |
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Abstract: | Horizontally propagating chemical fronts are studied in a thin solution layer of the acid-catalyzed chlorite-tetrathionate reaction. Unusual cellular patterns develop when significant amount of autocatalyst is bound to polyelectrolyte with low mobility: both oscillatory and stationary patterns evolve as a result of the interaction between the reaction front and the superposed gravity current. The concentration of the polyelectrolyte regulating the velocity of front propagation serves as a bifurcation parameter for switching between the two basic patterns. |
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