| 引用本文： |
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宋宣玉,袁国勇,陈光旨,薛郁.缺陷对周期螺旋波动力学行为的影响[J].广西科学,2006,13(1):23-26. [点击复制]
- SONG Xuan-yu,YUAN Guo-yong,CHEN Guang-zhi,XUE Yu.The Defect Effect on Dynamics of Periodic Spiral Wave[J].Guangxi Sciences,2006,13(1):23-26. [点击复制]
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| 摘要: |
| 在改进FitzHugh-Nagumo模型基础上得到缺陷对周期螺旋波动力学行为影响的研究模型,对缺陷影响周期螺旋波动力学的模型进行数值模拟,研究缺陷影响后周期螺旋波的演化。结果发现,当缺陷的中心位置不动且离波头中心足够远时,半径比较小的缺陷对波头没有影响;随着缺陷半径的增大,波头会小幅度地远离原位置;如果缺陷半径继续增大,则会出现波头大幅度地远离原位置及波头消失的现象;缺陷影响前后螺旋波波头的周期不变。 |
| 关键词: 周期螺旋波 缺陷 波头 动力学行为 |
| DOI： |
| 投稿时间：2005-06-03 |
| 基金项目:国家自然科学基金(10362001,10147201)资助项目 |
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| The Defect Effect on Dynamics of Periodic Spiral Wave |
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SONG Xuan-yu1, YUAN Guo-yong2, CHEN Guang-zhi1, XUE Yu1
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| (1.College of Physics Sciences and Engineer Technology, Guangxi University, Nanning, Guangxi, 530004, China;2.College of Physics Sciences and Information Engineer, Hebei Normal University, Shijiazhuang, Hebei, 050016, China) |
| Abstract: |
| The defect effect on the dynamics of periodic spiral wave using modified FitzHugh-Nagumo model is studied in detail.It is found that, when the center of the defect is determined and far enough away from the center of the spiral tip and if the radius of the defect is short, then there is no affect on the tip.Increasing the defect radius, the tip will be forced slightly away from the original position.While the radius of the defect is further extended, there will be a phenomenon that the tip is moved sharply away from the original position and the tip is vanished.The tip period of spiral wave was changless, during the defect effect on dynamics of periodic spiral wave. |
| Key words: periodic spiral wave defect tip dynamics |
