Chemically driven convection can stabilize Turing patterns

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Abstract
We study the effects of chemically driven convection on Turing structures. We consider a model where convective motion is generated by density gradients due to concentration variations of the Turing structures in a thin horizontally infinite layer of a solute reaction-diffusion system. We study this system with envelope equations and find that the coupling to chemically driven convection modifies the nonlinear coefficients in these equations. For a roll structure we show that this coupling can stabilize pure Turing patterns. An experimental setup to investigate these effects is proposed.