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arXiv 2103.13016math.DS
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某些化学动力学模型的稳定性、收敛性和分支

Stability, convergence and bifurcation in some models of chemical kinetics

Abuthahir Abdulrahuman, Kalyan Chakrabarti, Gaurav Raina

摘要:

本文分析了在非线性化学动力学发展中起关键作用的Boissonade-De Kepper(BD)模型的稳定性、收敛性和分支性质。我们首先概述了局部稳定性的条件,这可能有助于指导设计考虑。然后,我们证明了当稳定性条件被违反时,BD模型会经历霍普夫分支。利用Poincaré规范形和中心流形理论,我们得到了确定Hopf分支类型和极限环稳定性的显式解析表达式.这提供了对超出稳定状态的系统动态的见解。一些分析的见解与数值计算证实。我们还表明,本文所得到的数学结果可能有更广泛的适用性超越BD模型。

英文摘要:

In this paper, we analyze the stability, convergence, and bifurcation properties of the Boissonade-De Kepper (BD) model which played a key role in the development of nonlinear chemical dynamics. We first outline conditions for local stability, which may help guide design considerations. Then, we show that the BD model undergoes a Hopf bifurcation when the stability condition gets violated. Using Poincaré normal forms and center manifold theory, we derive explicit analytic expressions for determining the type of the Hopf bifurcation and the stability of the limit cycles. This provides insights on the system dynamics just beyond the stable regime. Some of the analytical insights are corroborated with numerical computations. We also show that the mathematical results obtained in this paper may have wider applicability beyond the BD model.

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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