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arXiv math-ph/0307064math-phmath.MP
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广义Burgers方程的低维模型

Low-dimensional modelling of a generalized Burgers equation

Zhenquan Li, A. J. Roberts

摘要:

Burgers方程是最简单的非线性偏微分方程之一,它结合了扩散和非线性变陡的基本过程。在某些应用中,扩散系数是时间相关函数是合适的。利用Wayne变换和中心流形理论,我们推导出广义Burgers方程的有界光滑时变系数的l-模和2-模中心流形模型。这些模型给出了一些有趣的扩展现有的结果,如相似性的解决方案,使用相似性的方法。

英文摘要:

Burgers equation is one of the simplest nonlinear partial differential equations-it combines the basic processes of diffusion and nonlinear steepening. In some applications it is appropriate for the diffusion coefficient to be a time-dependent function. Using a Wayne's transformation and centre manifold theory, we derive l-mode and 2-mode centre manifold models of the generalised Burgers equations for bounded smooth time dependent coefficients. These modellings give some interesting extensions to existing results such as the similarity solutions using the similarity method.

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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