arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2107.08448math.AP
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由薄复合层连接的均匀区域中反应-扩散-对流问题周期均匀化的尺度效应

Scaling effects on the periodic homogenization of a reaction-diffusion-convection problem posed in homogeneous domains connected by a thin composite layer

Vishnu Raveendran, Emilio N. M. Cirillo, Ida de Bonis, Adrian Muntean

摘要:

本文研究了具有非线性漂移的双尺度反应-扩散问题的周期均匀化问题。漂移的非线性结构在早期的工作中得到的流体动力学限制的一个完全不对称的简单排它过程(TASEP)的人口相互作用的粒子穿越一个域的障碍。利用能量型估计以及薄层收敛和两尺度收敛等概念,我们导出了正则化问题的齐次化发展方程和相应的有效模型参数。特别注意的是,在本质上是两种不同的情况下,通过分离极限界面的有效传输条件的推导:(i)超薄层和(ii)无限薄层。这项研究应被视为一个初步的步骤,需要调查平均快速非线性漂移跨越材料界面-一个主题,直接应用于薄复合材料的设计,意味着是不可穿透的高速冲击。

英文摘要:

We study the question of periodic homogenization of a variably scaled reaction-diffusion problem with non-linear drift posed for a domain crossed by a flat composite thin layer. The structure of the non-linearity in the drift was obtained in earlier works as hydrodynamic limit of a totally asymmetric simple exclusion process (TASEP) process for a population of interacting particles crossing a domain with obstacle. Using energy-type estimates as well as concepts like thin-layer convergence and two-scale convergence, we derive the homogenized evolution equation and the corresponding effective model parameters for a regularized problem. Special attention is paid to the derivation of the effective transmission conditions across the separating limit interface in essentially two different situations: (i) finitely thin layer and (ii) infinitely thin layer. This study should be seen as a preliminary step needed for the investigation of averaging fast non-linear drifts across material interfaces -- a topic with direct applications in the design of thin composite materials meant to be impenetrable to high-velocity impacts.

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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