Surface tension driven flow on a thin reaction front
| Autor: | Roberto Guzman, Desiderio A. Vasquez |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Convection
Materials science Flow (psychology) Front (oceanography) General Physics and Astronomy Mechanics Curvature 01 natural sciences Chemical reaction 010305 fluids & plasmas Physics::Fluid Dynamics Surface tension Discontinuity (linguistics) Classical mechanics 0103 physical sciences Fluid dynamics General Materials Science Physical and Theoretical Chemistry 010306 general physics Nonlinear Sciences::Pattern Formation and Solitons |
| Zdroj: | The European Physical Journal Special Topics. 225:2573-2580 |
| ISSN: | 1951-6401 1951-6355 |
| Popis: | Surface tension driven convection affects the propagation of chemical reaction fronts in liquids. The changes in surface tension across the front generate this type of convection. The resulting fluid motion increases the speed and changes the shape of fronts as observed in the iodate-arsenous acid reaction. We calculate these effects using a thin front approximation, where the reaction front is modeled by an abrupt discontinuity between reacted and unreacted substances. We analyze the propagation of reaction fronts of small curvature. In this case the front propagation equation becomes the deterministic Kardar-Parisi-Zhang (KPZ) equation with the addition of fluid flow. These results are compared to calculations based on a set of reaction-diffusion-convection equations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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