物理学报2011，Vol.60Issue(4)：66-71,6.
交替行为对螺旋波影响的数值模拟研究
Numerical simulation study on effects of alternans behavior on spiral waves
摘要
Abstract
The alternans behavior is considered in the Greenberg-Hasting model of discrete excitable medium. The effect of the alternans behavior on spiral wave is investigated. The numerical results show that when the relevant parameters are appropriately chosen the alternans behavior has a significant influence on spiral waves. For example, the alternans behavior leads to the oscillation of the shape of the spiral wave and to the generation of the breathing spiral wave. The alternans behavior induces the meandering and the drifting of spiral waves, even causes spiral wave to move out of the system. Spiral wave can break up into multiple spiral waves, anti-target wave and spatiotemporal chaos due to the alternans behavior. The phenomena that the alternans behavior leads to the conduction barrier in homogeneous medium and causes spiral wave to break up or vanish, are observed for the first time. The physical mechanisms about these phenomena are briefly analyzed.关键词
离散可激发介质/螺旋波/靶波/漫游Key words
discrete excitable medium/ spiral wave/ target wave/ meandering引用本文复制引用
韦海明,唐国宁..交替行为对螺旋波影响的数值模拟研究[J].物理学报,2011,60(4):66-71,6.基金项目
国家自然科学基金(批准号:10765002)资助的课题. （批准号:10765002）
