Chemo-hydrodynamic self-organization around reaction fronts

Conf’luence Anne De WIT

Université libre de Bruxelles

Vendredi 26 septembre à 10 h 30 • Amphithéâtre Nougaro

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The interplay between reactions and diffusion can generate traveling reaction fronts in which the chemical reaction takes place in a localized zone, when the reactants are initially separated in space. Across such fronts, composition gradients car trigger density or viscosity gradients at the source of hydrodynamic motions. In case of a precipitation reaction, solid product can be generated locally, which can have an impact on surrounding flows as well. In the talk, we will review the properties of the reaction-diffusion-convection dynamics taking place around such traveling fronts, emphasing the new self-organizing patterns that can emerge due to combined specificities of diffusive and hydrodynamic instabilities.