Münster 1999 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 41: POSTER II

DY 41.23: Poster

Donnerstag, 25. März 1999, 09:30–13:00, Z

Dynamical Behaviour in the Oregonator Model with Different Diffusion Coefficients — •Evgueni P. Zemskov¹, Klaus Kassner¹, and Vladimir S. Zykov² — ¹Institut für Theoretische Physik, Otto-von-Guericke-Universität, Universitätsplatz 2, D-39106 Magdeburg — ²Institut für Experimentelle Physik, Otto-von-Guericke-Universität, Universitätsplatz 2, D-39106 Magdeburg

The diffusion coefficients are practically equal for the reactants of such well-studied chemical reaction-diffusion systems as the Belouzov-Zhabotinsky reaction. Applying a stochastic electric field, one enhances the existing thermal stochastic motion of the reacting ions. For a sufficiently slow physical-chemical process, this enhanced stochastic motion of the ions appears similar to an enhanced diffusivity of these particles. The oregonator model with different diffusion coefficients is considered. The propagating wave solutions for reagent concentrations are obtained and their stability is studied. The influence of experimental parameters is discussed.