C17 - Boundaries of convective flow across waves (BZ)

C17 - Boundaries of convective flow across waves (BZ)

The dynamics of pattern formation reaches a higher level of complexity as soon as convective flow joins diffusion as a transport mechanism. If, e. g., surface forces, as they are caused by gradients in concentration and/ or temperature (mostly induced by evaporation), get off balance, the lower layers of the solution often arrange themselves in surprisingly regular patterns in the millimeter range. The bright and dark lines in the picture mark the boundaries of so—called convection cells, where streams
of the liquid moving in different directions encounter. In these regions the mixing of substances is more pronounced and therefore matter transport is increased, “stimulating” the chemical reaction, as shown in picture C18.
C17 gives an impression of the effects which convection may exert on the Belousov—Zhabotinskii reaction (BZ).

Pattern formation (Physical sciences); Physics; Visualization; Nonlinear Dynamics; Pattern Formation; Chemical Waves; Reaction Diffusion Systems; Nonlinear Waves; Traveling Waves; Chemical Oscillations; Oscillating chemical reactions;

Müller, Stefan C.

Plesser, Theo

Dynamic Pattern Formation in Chemistry and Mathematics: Aesthetics in the Sciences: Catalogue of an Exhibition

Müller, Stefan C; Markus, Mario; Plesser, Theo; Hess, Benno; Max-Planck-Institut für Ernährungsphysiologie Dortmund, West-Germany

1988

Laupenmühlen Druck, Bochum

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Still Image