High-order corrected trapezoidal rules for a class of singular integrals
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作者:
Federico Izzo
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机构:KTH Royal Institute of Technology,Department of Mathematics
Federico Izzo
Olof Runborg
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机构:KTH Royal Institute of Technology,Department of Mathematics
Olof Runborg
Richard Tsai
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机构:KTH Royal Institute of Technology,Department of Mathematics
Richard Tsai
机构:
[1] KTH Royal Institute of Technology,Department of Mathematics
[2] The University of Texas at Austin,Department of Mathematics and Oden Institute for Computational Engineering and Sciences
来源:
Advances in Computational Mathematics
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2023年
/
49卷
关键词:
Singular integrals;
Trapezoidal rules;
Level set methods;
Closest point projection;
Boundary integral formulations;
65D32;
65R20;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
We present a family of high-order trapezoidal rule-based quadratures for a class of singular integrals, where the integrand has a point singularity. The singular part of the integrand is expanded in a Taylor series involving terms of increasing smoothness. The quadratures are based on the trapezoidal rule, with the quadrature weights for Cartesian nodes close to the singularity judiciously corrected based on the expansion. High-order accuracy can be achieved by utilizing a sufficient number of correction nodes around the singularity to approximate the terms in the series expansion. The derived quadratures are applied to the implicit boundary integral formulation of surface integrals involving the Laplace layer kernels.
机构:
State Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, China
Gao, Xiaowei
Feng, Weizhe
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机构:
State Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, China
Feng, Weizhe
Zhao, Jinjun
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机构:
State Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, China
Zhao, Jinjun
Cui, Miao
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机构:
State Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, China
Cui, Miao
WIT Transactions on Modelling and Simulation,
2014,
56
: 335
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351