On the Convergence of Local Expansions of Layer Potentials

On the Convergence of Local Expansions of Layer Potentials
复制标题

关于层势局部展开的收敛性

DOI:
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发表时间:
2012
影响因子:
2.9
通讯作者:
Andreas Klöckner
Andreas Klöckner
中科院分区:
数学2区
文献类型:
--
作者:
C. Epstein;L. Greengard;Andreas Klöckner

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在最近发展的求积方法(QBX),它被证明,弱奇异或奇异层位可以快速,准确地评估表面上通过使用仔细选择的离表面点的局部展开。在本文中,我们得到这些局部展开式的收敛速度的估计,提供了QBX方法的分析基础。估计也可能是数学上的兴趣,特别是微局部或渐近分析潜在的理论。
In a recently developed quadrature method (quadrature by expansion or QBX), it was demonstrated that weakly singular or singular layer potentials can be evaluated rapidly and accurately on-surface by making use of local expansions about carefully chosen off-surface points. In this paper, we derive estimates for the rate of convergence of these local expansions, providing the analytic foundation for the QBX method. The estimates may also be of mathematical interest, particularly for microlocal or asymptotic analysis in potential theory.
DOI: 10.1002/num.20643
发表时间: 2010
影响因子: 3.9
作者:
Betcke T
通讯作者: Betcke T