三变量反应扩散方程中的多臂螺旋波  

Multi-armed Spiral Waves in Three-component Reaction Diffusion Systems

作　　者：刘富成[1] 王晓菲[1] 

机构地区：[1]河北大学物理科学与技术学院,河北保定071002

出　　处：《河北大学学报（自然科学版）》2009年第4期376-380,共5页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10647123)

摘　　要：利用扩展的三变量Oregonatar模型,得到了自发形成的多臂螺旋波.结果发现多臂螺旋波的产生源于系统的短波不稳定性.系统的短波模形成了周期性振荡的空间结构,它们之间相互作用从而产生了不同臂数的螺旋波结构.还得到了双臂螺旋波和三臂螺旋波的中心动力学过程.Multi-armed spiral waves can form spontaneously in the extended Oregonatar model. It is found that the formation mechanism of multi-armed spiral waves is attributed to short wave instability of the system. Oscillatory spatial structures coming from the short wave modes interact each other and give rise to spiral waves with different arms. Furthermore, the core dynamics of the double-armed spiral waves and three-armed spiral waves have also been observed.

关 键 词：Oregonator模型 短波不稳定性 多臂螺旋波 

分 类 号：O415.3[理学—理论物理]