Dresden 2006 – wissenschaftliches Programm

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SYSS: Structure Formation and Self-Organization in non-equilibrium Systems

SYSS 3: Structure Formation and Self-Organization in non-equilibrium Systems - Poster

SYSS 3.26: Poster

Donnerstag, 30. März 2006, 16:00–18:00, P1

Spatially periodic modulation of an oscillating chemical reaction — •Martin Hammele and Walter Zimmermann — Theoretische Physik, Universität Bayreuth

The effects of spatially periodic forcing on an oscillating chemical reaction as described by the Lengyl-Epstein model are investigated. The forcing, which enters additively into the model, leads to a spatially periodic pattern that is either harmonic or subharmonic with respect to the external spatially periodic forcing. The subharmonic pattern is found in a large parameter range by numerical solutions of the full model as well by the analysis of an amplitude equation derived from the basic model. Both approaches agree up to fairly large modulation amplitudes.