B-Z反应中斑图的数值模拟及实验研究  

Simulative and experimental researches of the pattern in Belousov-Zhabotinsky oscillation reaction

作　　者：郑佳喻[1] 周华喜[1] 孙金芳[1] 杨军[1] 孙萍[1] 

机构地区：[1]北京师范大学物理系,北京100875

出　　处：《大学物理》2008年第10期50-54,共5页College Physics

摘　　要：根据B-Z反应的FKN机理得出的二维Tyson模型,用差分方法模拟了靶型波、单螺旋波、双螺旋波的形成过程.通过数值模拟发现螺旋波的组织中心是一个点缺陷,系统所有的动力学行为都受这个缺陷点的影响.在此基础上,在封闭的溴酸盐/硫酸/试亚铁灵的B-Z反应体系中,通过割断靶型波的方法,产生了双螺旋波.同时,也观察到了单螺旋波与螺旋波的破碎.这些实验结果与数值模拟结果一致.将B-Z振荡反应实验引入非线性物理实验教学中,可以扩充时空动力学的实验内容.According to the two-dimensional Tyson model based on FKN mechanism, we study the forming process of target wave and spiral wave by using the differential method. It is found from our simulation that there is a defect in the center of spiral waves, which dominates the dynamics of spiral waves. In experiments, a spiral pair is initiated by cutting out a target wave. The single spiral wave and broken spiral wave are also observed. The experimental results are in agreement with the simulations. The Belousov-Zhabotinsky reaction should be a part of nonlinear experiment course in order to enrich the experiments of spatio-temporal dynamics.

关 键 词：B-Z反应 点缺陷 靶型波 螺旋波 数值模拟 

分 类 号：O461[理学—电子物理学]