| 用晶格Boltzmann方法研究激发介质中时空混沌的产生与控制 |
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| 引用本文： | 白克钊,邓敏艺,唐国宁,孔令江,刘慕仁.用晶格Boltzmann方法研究激发介质中时空混沌的产生与控制[J].广西科学,2009,16(3):290-292. |
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| 作者姓名： | 白克钊 邓敏艺 唐国宁 孔令江 刘慕仁 |
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| 作者单位： | 广西师范大学物理科学与技术学院,广西桂林,541004 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 采用晶格Boltzmann方法，通过计算机数值模拟，研究激发介质中时空混沌的产生与控制。结果发现激发介质螺旋波的失稳属于多普勒失稳；螺旋波破碎成时空混沌前出现波头螺旋式运动；处于时空混沌态的系统各个位置具有相同的振幅谱；适当频率的正弦振荡信号可有效地控制时空混沌态。
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| 关 键 词： | 时空混沌 螺旋波 激发介质 格子Boltzmann方法 |
| 收稿时间： | 2009/3/31 0:00:00 |
Studying on the Occurrence and Control of the Spatiotemporal Chaos in Excited Media with Lattice Boltzmann Method |
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| BAI Ke-zhao,DENG Min-yi,TANG Guo-ning,KONG Ling-jiang and LIU Mu-ren.Studying on the Occurrence and Control of the Spatiotemporal Chaos in Excited Media with Lattice Boltzmann Method[J].Guangxi Sciences,2009,16(3):290-292. |
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| Authors: | BAI Ke-zhao DENG Min-yi TANG Guo-ning KONG Ling-jiang and LIU Mu-ren |
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| Institution: | (College of Physics and Technology,Guangxi Normal University,Guilin,Guangxi, 541004,China) |
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| Abstract: | The occurrence and control of spatiotemporal chaos in excited media are studied with Lattice Boltzmann method. The numerical results show that the instability of the spiral waves in the excited media is a Doppler instability. The tip of the spiral waves undergoes spiral motion before spiral waves become spatiotemporal chaos. The system has the same amplitude spectrum in different sites after becoming spatiotemporal chaos. The spatiotemporal chaos can be controlled efficiently by the suitable period signal. |
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| Keywords: | spatiotemporal chaos spiral wave excited media lattice Boltzmann method |
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