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arXiv 2109.03409math.NAcs.NA
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一种用于表面扩散的基于核的最小二乘配点法

A kernel-based least-squares collocation method for surface diffusion

Meng Chen, Ka Chun Cheung, Leevan Ling

AI总结:

该研究将定常椭圆方程过测试的收敛理论推广到光滑闭曲面抛物型方程,提出采用空间配点与过测试的核基无网格线法求解曲面扩散问题,为非对称Kansa型配点法的抛物问题应用提供理论支撑。

摘要:

文献中已有大量针对定常椭圆型偏微分方程的应用与分析,表明采用比基函数数量更多的配点条件进行过测试的优势。过测试不仅能缩小问题规模,还被认为是广泛使用的非对称Kansa型强形式配点法实现稳定性与收敛性的必要条件。我们研究基于核的无网格方法,这是一种在空间上采用配点与过测试的线法,用于求解无需参数化的曲面上的抛物型偏微分方程。本文将过测试技术的定常收敛理论推广到光滑闭曲面上的抛物型方程。

英文摘要:

There are plenty of applications and analysis for time-independent elliptic partial differential equations in the literature hinting at the benefits of overtesting by using more collocation conditions than the number of basis functions. Overtesting not only reduces the problem size, but is also known to be necessary for stability and convergence of widely used unsymmetric Kansa-type strong-form collocation methods. We consider kernel-based meshfree methods, which is a method of lines with collocation and overtesting spatially, for solving parabolic partial differential equations on surfaces without parametrization. In this paper, we extend the time-independent convergence theories for overtesting techniques to the parabolic equations on smooth and closed surfaces.

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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