Buoyancy-driven instabilities around miscible A+B→C reaction fronts: a general classification

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
P M J TrevelyanA De Wit

Abstract

Upon contact between miscible solutions of reactants A and B along a horizontal interface in the gravity field, various buoyancy-driven instabilities can develop when an A+B→C reaction takes place and the density varies with the concentrations of the various chemicals. To classify the possible convective instability scenarios, we analyze the spatial dependence of the large time asymptotic density profiles as a function of the key parameters of the problem, which are the ratios of diffusion coefficients and of solutal expansion coefficients of species A, B, and C. We find that 62 different density profiles can develop in the reactive problem, whereas only 6 of them can be obtained in the nonreactive one.

References

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Citations

Jun 15, 2015·The Journal of Chemical Physics·Amit Kumar BhattacharjeeAleksandar Donev
Sep 7, 2016·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·A De Wit
Oct 22, 2015·Physical Chemistry Chemical Physics : PCCP·V LoodtsA De Wit
Jan 20, 2018·Physical Review. E·Dmitry BratsunKonstantin Kostarev
Dec 15, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Seyed Mostafa Jafari Raad, Hassan Hassanzadeh
May 16, 2018·Physical Review. E·Seyed Mostafa Jafari Raad, Hassan Hassanzadeh
Aug 15, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Dmitry BratsunElena Mosheva

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