Rotating chemical waves: theory and experiments

After a brief introduction in the first theoretic part of this work the geo metrical wave theory and its application for rotating waves are discussed. Here the waves ape rotating around a circular obstacle which is surrounded by two homogeneous wave conducting regions with different wave velocities. The interface of the inner slow and the outer fast region is also a circle but the two circles (the obstacle and interface) are not concentric. The va rious asymmetric cases are classified and described theoretically. In the s econd experimental part chemical waves rotating in a so-called moderately a symmetric reactor are studied. A piecewise homogeneous wave conducting medi um is created applying a novel reactor design. All the three theoretical ca ses of the moderately asymmetric arrangement are realized experimentally an d qualitative and quantitative comparison of these results with the theoret ical predictions show a good agreement. (C) 1999 Elsevier Science B.V. All rights reserved.