Plume and Finger Regimes Driven by an Exothermic Interfacial Reaction
- 31 May 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 82 (22) , 4436-4439
- https://doi.org/10.1103/physrevlett.82.4436
Abstract
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 neutralization reaction in vicinity to the interface. This instability combines plume and finger regimes and gives rise to a self-sustained dynamics.Keywords
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