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Qualitative dynamical analysis of chaotic plasma perturbations model

机译:混沌等离子体摄动模型的定性动力学分析

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摘要

In this work, an analytical framework to understand nonlinear dynamics of plasma perturbations model is introduced. In particular, we analyze the model presented by Constantinescu et al. [20] which consists of three coupled ODEs and contains three parameters. The basic dynamical properties of the system are first investigated by the ways of bifurcation diagrams, phase portraits and Lyapunov exponents. Then, the normal form technique and perturbation methods are applied so as to the different types of bifurcations that exist in the model are investigated. It is proved that pitcfork, Bogdanov-Takens, Andronov-Hopf bifurcations, degenerate Hopf and homoclinic bifurcation can occur in phase space of the model. Also, the model can exhibit quasiperiodicity and chaotic behavior. Numerical simulations confirm our theoretical analytical results. (C) 2017 Elsevier B.V. All rights reserved.
机译:在这项工作中,介绍了一种理解等离子体扰动模型非线性动力学的分析框架。特别是,我们分析了Constantinescu等人提出的模型。 [20]由三个耦合的ODE组成,包含三个参数。首先通过分叉图,相图和Lyapunov指数研究系统的基本动力学特性。然后,应用范式技术和摄动方法,以便研究模型中存在的不同类型的分叉。事实证明,在模型的相空间中,可能会出现pitcfork,Bogdanov-Takens,Andronov-Hopf分叉,简并的Hopf分叉和同斜分叉。而且,该模型可以表现出准周期性和混沌行为。数值模拟证实了我们的理论分析结果。 (C)2017 Elsevier B.V.保留所有权利。

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