Concentration-Dependent Diffusion Instability in Reactive Miscible Fluids
Fluid Dynamics
2015-06-26 v1
Abstract
We report new chemoconvective pattern formation phenomena observed in a two-layer system of miscible fluids filling a vertical Hele-Shaw cell. We show both experimentally and theoretically that the concentration-dependent diffusion coupled with the frontal acid-base neutralization can give rise to formation of the local unstable zone low in density resulting in a perfectly regular cell-type convective pattern. The described effect gives an example of yet another powerful mechanism which allows the reaction-diffusion processes to govern the flow of reacting fluids under gravity condition.
Cite
@article{arxiv.1506.07646,
title = {Concentration-Dependent Diffusion Instability in Reactive Miscible Fluids},
author = {Dmitry Bratsun and Konstantin Kostarev and Alexey Mizev and Elena Mosheva},
journal= {arXiv preprint arXiv:1506.07646},
year = {2015}
}
Comments
to be published in Physical Review E