Plume and finger regimes driven by an exothermic interfacial reaction
Plume and finger regimes driven by an exothermic interfacial reaction
Eckert, K.; Grahn, A.
We study the pattern formation in a chemical two-layer system, placed in a Hele-Shaw cell. The upper layer is an organic solvent in which a carboxylic acid is dissolved. The lower layer consists of water containing an inorganic base. We report on a novel instability type which is driven by an exothermic neutralisation reaction in vicinity to the interface. This instability combines plume and finger regimes and gives rise to a self-sustained dynamics.
Keywords: hydrodynamic instability; plume regime; finger regime; interfacial reaction; interfacial instability; pattern formation
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Physical Review Letters 82, 31 May 1999, Number22, 4436-4439
DOI: 10.1103/PhysRevLett.82.4436
Cited 82 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-1943