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arXiv 1102.2105nlin.CD
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混沌动力学结构的快速指示器--瞬时旋转数

Finite-time rotation number: a fast indicator for chaotic dynamical structures

J. D. Szezech, A. B. Schelin, I. L. Caldas, S. R. Lopes, P. J. Morrison, R. L. Viana

摘要:

拉格朗日相干结构是有效的屏障,粘性区域,分离不同动力学行为的相空间区域。检测这种结构的常用方法是通过有限时间李雅普诺夫指数。我们表明,类似的结果可以从有限时间的旋转数,这是更快的计算单频系统。我们通过考虑物理意义上的连续和离散时间动力系统的例子来说明我们的主张。

英文摘要:

Lagrangian coherent structures are effective barriers, sticky regions, that separate phase space regions of different dynamical behavior. The usual way to detect such structures is via finite-time Lyapunov exponents. We show that similar results can be obtained for single-frequency systems from finite-time rotation numbers, which are much faster to compute. We illustrate our claim by considering examples of continuous and discrete-time dynamical systems of physical interest.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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