具有Robin边界条件的反应扩散系统整体解的界

IF 0.7 Q3 MATHEMATICS, APPLIED
K. Kita, M. Otani
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引用次数: 1

摘要

本文考虑由两个实值未知函数组成的具有Robin边界条件的核反应堆模型反应扩散系统解的大时间行为。特别地,我们证明了该系统的整体解是关于时间的一个合适范数的一致有界的。由于该系统没有变分结构,我们不能应用依赖于Lyapunov泛函的标准方法来获得全局解的先验估计。为了解决这一困难,我们利用了具有Robin边界条件的拉普拉斯第一特征函数特征的加权L^1范数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bounds for global solutions of a reaction diffusion system with the Robin boundary conditions
In this paper, we consider the large-time behavior of solutions of a reaction diffusion system arising from a nuclear reactor model with the Robin boundary conditions, which consists of two real-valued unknown functions. In particular, we show that global solutions of this system are uniformly bounded in a suitable norm with respect to time. Since this system has no variational structure, we cannot apply the standard methods relying on the Lyapunov functional in order to obtain a priori estimates of global solutions. To cope with this difficulty, we make use of the weighted $L^1$ norm characterized by the first eigenfunction of Laplacian with the Robin boundary condition.
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