物理学报Issue(22)：1-10,10.DOI:10.7498/aps.63.228201
气体放电系统中多臂螺旋波的数值分析
Numerical analysis on multi-armed spiral patterns in gas discharge system
摘要
Abstract
The process of formation or transformation of multi-armed spiral patterns in gas discharge system is investigated numerically by using H.-G. Purwins model with three components. The parameter space is obtained though analyzing the influence of system parameters on system space, where a stable spiral appears. Besides, the formation mechanism and spatiotemporal characteristics of spiral pattern are studied. In addition, the evolution process of pattern from simple hexagon to spiral wave is numerically simulated, and various kinds of spirals are obtained (including two-armed, three-armed, four-armed, five-armed, six-armed, and seven-armed spirals). It is found that the stable spiral only survives in Turing-Hopf space, which is the result of interaction between Turing mode and Hopf mode. Furthermore, the spiral tips constantly rotate for various spiral patterns, and the velocity increases with the number of spiral arm increasing. For the influences of perturbation and boundary conditions, the multi-armed spiral pattern can lose one arm and become a new spiral in the rotating process. In conclusion, the numerical simulation results are in good agreement with those obtained in gas discharge experiment.关键词
螺旋波/数值模拟/气体放电Key words
spiral pattern/numerical simulation/gas discharge引用本文复制引用
白占国,李新政,李燕,赵昆..气体放电系统中多臂螺旋波的数值分析[J].物理学报,2014,(22):1-10,10.基金项目
国家自然科学基金青年科学基金(批准号:51201057)、河北省自然科学基金(批准号：A2014208171)和河北科技大学科研基金(批准号：QD201225, SW09)资助的课题.* Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No.51201057), the Natural Science Foundation of Hebei Province, China (Grant No. A2014208171), and the Foundation of Hebei University of Science and Technology, China (Grant Nos. QD201225, SW09) （批准号:51201057）
