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总览 评价 黄琼伟 1, , 唐驾时 2,* ( 1、 湖南大学机械与运载工程学院; 2、 湖南大学机械与运载工程学院,长沙 410082; ) 摘要: 在周期边界条件下,利用中心流形约化方法研究了一个具有高阶非线性项的广义Kuramoto- Sivashinsky方程的动态分岔和稳定
黄琼伟1,, 唐驾时2,*
(
1、湖南大学机械与运载工程学院; 2、湖南大学机械与运载工程学院,长沙 410082; )
摘要:
在周期边界条件下,利用中心流形约化方法研究了一个具有高阶非线性项的广义Kuramoto- Sivashinsky方程的动态分岔和稳定性. 结果显示,当控制参数穿过临界值后,该系统在平凡解处分岔出一圈的局部渐近稳定的奇点. 通过进一步分析,当分岔距离足够小时,获得了一阶近似分岔解.
关键词:
Kuramoto-Sivashinsky方程;中心流形约化;动态分岔
Huang Qiongwei1,, Tang Jiashi2,*
(
1、College of Mechanical and Vehicle Engineering, Hunan University; 2、College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082; )
Abstract:
Under periodic boundary condition, dynamic bifurcation and stability in the modified Kuramoto- Sivashinsky equation with a higher-order nonlinearity are investigated by using center manifold reduction procedure. The result shows, as the control parameter crosses a critical value, the system undergoes a bifurcation from the trivial solution to produce a cycle consisting of locally asymptotically stable equilibrium points. Furthermore, for the distance from bifurcation small enough, one-order approximations to the bifurcation solutions are obtained.
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