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Pattern of reaction diffusion fronts in laminar flows.

M Leconte·J Martin·N Rakotomalala·D Salin
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Abstract

Autocatalytic reaction between reacted and unreacted species may propagate as solitary waves, namely, at a constant front velocity and with a stationary concentration profile, resulting from a balance between molecular diffusion and chemical reaction. The effect of advective flow on the autocatalytic reaction between iodate and arsenous acid in cylindrical tubes and Hele-Shaw cells is analyzed experimentally and numerically using lattice Bhatnagar-Gross-Krook simulations. We do observe the existence of solitary waves with concentration profiles exhibiting a cusp and we delineate the eikonal and mixing regimes recently predicted.

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AnimalsDiffusionModels, TheoreticalPopulation DynamicsJournal ArticleResearch Support, Non-U.S. Gov't

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M Leconte, J Martin, N Rakotomalala, D Salin. 2003-03-27. Pattern of reaction diffusion fronts in laminar flows.. https://doi.org/10.1103/physrevlett.90.128302

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