化学反应扩散体系中振幅调制螺旋波的频率分析

Frequency analysis of amplitude-modulatory spiral patterns in a chemical reaction-diffusion model

在一个多变量复杂化学反应-扩散系统的数值模拟中发现了具有振幅调制结构的时空斑图。通过对其振荡频率进行分析和绘制参数空间内的频率相图,解释了这种调制现象的产生原理,并阐述了扩散耦合作用对化学反应系统的稳定性产生的扰动会改变系统在不同振荡模式之间的交替方式。

Spiral waves with amplitude-modulations can be observed in the simulations of a three-variables chemical reaction-diffusion system.By the frequency analysis and the phase diagram of frequencies,we investigated the formation mechanism of the amplitude-modulatory spiral patterns.And the alteration of transitions between different modes of oscillations in this chemical system also be explained.