非均匀可激发介质中一对螺旋波的共存  

The coexistence of a pair of spiral waves in an inhomogeneous excitable medium

作　　者：刘贵泉[1] 罗宏雷[1] 徐鹏[1] 张高会[1] 

机构地区：[1]中国计量学院理学院,浙江杭州310018

出　　处：《中国计量学院学报》2010年第2期183-186,共4页Journal of China Jiliang University

基　　金：国家自然科学基金资助项目(No.10947153);浙江省科技厅重点项目(No.2007C21139)

摘　　要：基于Barkley模型研究了非均匀性可激发介质中螺旋波的共存性态.该模型中各参数与可激发介质的属性密切相关,数值模拟表明,可激发介质的非均匀性对螺旋波波纹的粗细、疏密程度以及螺旋波的共存有较大的影响.存在于空间中的一对螺旋波由于参数的不同将导致共存或漂移现象.The coexistence of a pair of spiral waves in the Barkley model due to inhomogeneity was investigated.The model parameters were closely related to the properties of excitable media that mainly depended on the model parameters of the media.Numerical results confirm that the degree of inhomogeneity in the media plays a critical role in the formation of spiral waves,such as the spacing(density) and the coexistence of spiral waves.A pair of spiral waves occurs drift or coexistent due to certain appropriate param...

关 键 词：螺旋波 Barkley模型 非均匀介质 

分 类 号：O415[理学—理论物理]