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arXiv 1402.4252math.NAcs.NA
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一种用于具有梯度流结构的非线性非局部方程的有限体积方法

A Finite-Volume Method for Nonlinear Nonlocal Equations with a Gradient Flow Structure

Imperial College London(帝国理工学院);North Carolina State University(北卡罗来纳州立大学)

José A. Carrillo, Alina Chertock, Yanghong Huang

AI总结:

本文提出一种保持正性和熵递减的有限体积方案,用于求解具有梯度流结构的非线性非局部方程,能够准确计算稳态和长时间渐进行为,处理非光滑稳态、不同时间尺度及非局部核诱导的集中现象。

摘要:

我们提出了一种保持正性和熵递减的有限体积方案,用于非线性非局部方程的梯度流结构。这些特性允许通过精心选择的测试案例准确计算稳态和长时间渐进行为,这些特性对于方案的准确性至关重要。所提出的方案能够处理非光滑稳态、不同的时间尺度包括亚稳态,以及由奇异非局部核诱导的集中和自相似行为。我们使用该方案探索这些方程的性质,超越当前的理论知识。

英文摘要:

We propose a positivity preserving entropy decreasing finite volume scheme for nonlinear nonlocal equations with a gradient flow structure. These properties allow for accurate computations of stationary states and long-time asymptotics demonstrated by suitably chosen test cases in which these features of the scheme are essential. The proposed scheme is able to cope with non-smooth stationary states, different time scales including metastability, as well as concentrations and self-similar behavior induced by singular nonlocal kernels. We use the scheme to explore properties of these equations beyond their present theoretical knowledge.

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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