Hierarchical quadrature for multidimensional singular integrals

Hierarchical quadrature for multidimensional singular integrals
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多维奇异积分的分层求积

DOI:
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发表时间:
2010
期刊:
J. Num. Math.
影响因子:
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通讯作者:
P. Meszmer
P. Meszmer
中科院分区:
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文献类型:
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作者:
P. Meszmer

文献摘要

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摘要介绍了积分方程离散化过程中产生的奇异积分的一种计算方法。该方法基于区域重复细分的思想。对定义在这些子域上的积分进行了分类。每一类都可以表示为正则积分和其他类的表示的和。一组方程描述了类之间的关系。因此,奇异积分的近似值只取决于正则积分计算的精度。
Abstract We introduce a method for the evaluation of singular integrals arising in the discretisation of integral equations. The method is based on the idea of repeated subdivision of domains. The integrals defined on these subdomains are classified. Each class can be expressed as a sum of regular integrals and representatives of other classes. A system of equations describes the relations between the classes. Therefore the approximate value of the singular integral only depends on the accuracy of the calculation of regular integrals.