INFLUENCE OF THE BENARD ROLLS ON THE TRAVELING IMPULSE IN THE BELOUSOV-ZHABOTINSKY REACTION

A model of a chemical system in which the traveling impulse is affecte d by externally imposed natural convection in the form of the Benard r olls is considered. The traveling impulse is described by the two-vari able model of the B-Z reaction in an excitable regime. Numerical solut ions to corresponding reaction-diffusion-convection equations show tha t the natural convection can generate a train of pulses of excitation, which are created from the single traveling impulse. The subsequently generated pulses spread alternately in the same and in the opposite d irections as the initial traveling impulse, and they exhibit some type of translational delayed symmetry.