期刊
ANNUAL REVIEW OF FLUID MECHANICS, VOL 52
卷 52, 期 -, 页码 531-555出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-fluid-010719-060349
关键词
reactive flows; viscous fingering; buoyancy-driven instabilities; Rayleigh-Taylor; double diffusion; chemical fronts; chemo-hydrodynamics
By modifying a physical property of a solution like its density or viscosity, chemical reactions can modify and even trigger convective flows. These flows in turn affect the spatiotemporal distribution of the chemical species. A nontrivial coupling between reactions and flows then occurs. We present simple model systems of this chemo-hydrodynamic coupling. In particular, we illustrate the possibility of chemical reactions controlling or triggering viscous fingering, Rayleigh-Taylor, double-diffusive, and convective dissolution instabilities. We discuss laboratory experiments performed to study these phenomena and compare the experimental results to theoretical predictions. In each case we contrast the chemo-hydrodynamic patterns and instabilities with those that develop in nonreactive systems and unify the different dynamics in terms of the common features of the related spatial mobility profiles.
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