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arXiv 1104.0076math.AP
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具有高振荡边界的薄区域中的Neumann问题

The Neumann problem in thin domains with very highly oscillatory boundaries

José M. Arrieta, Marcone C. Pereira

摘要:

本文研究了一类具有$α>1$和$ε> 0$的$R^ε= \{(x_1,x_2) \in \R^2 \; | \; x_1 \in (0,1), \, - \, ε\, b(x_1) < x_2 < ε\, G(x_1, x_1/ε^α) \}$型薄区域上的Neumann问题解的性质,该薄区域由光滑函数$b(x)$和$G(x,y)$定义,其中函数$G$假定是关于第二变量$y$的$l(x)$ -周期函数.条件$α> 1$意味着该薄区域的上边界呈现非常高的振荡行为。事实上,我们有它的振荡的顺序是大于由小参数$ε$给出的$R^ε$的振幅和高度的顺序。我们还考虑了更一般和复杂的几何形状薄域,而不是作为某些光滑函数的图形,而是更梳状域。

英文摘要:

In this paper we analyze the behavior of solutions of the Neumann problem posed in a thin domain of the type $R^ε= \{(x_1,x_2) \in \R^2 \; | \; x_1 \in (0,1), \, - \, ε\, b(x_1) < x_2 < ε\, G(x_1, x_1/ε^α) \}$ with $α>1$ and $ε> 0$, defined by smooth functions $b(x)$ and $G(x,y)$, where the function $G$ is supposed to be $l(x)$-periodic in the second variable $y$. The condition $α> 1$ implies that the upper boundary of this thin domain presents a very high oscillatory behavior. Indeed, we have that the order of its oscillations is larger than the order of the amplitude and height of $R^ε$ given by the small parameter $ε$. We also consider more general and complicated geometries for thin domains which are not given as the graph of certain smooth functions, but rather more comb-like domains.

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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