Corrected trapezoidal rules for singular implicit boundary integrals
Corrected trapezoidal rules for singular implicit boundary integrals
复制标题
奇异隐式边界积分的修正梯形规则
DOI:
10.1016/j.jcp.2022.111193
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发表时间:
2022
影响因子:
4.1
通讯作者:
Tsai, Richard
中科院分区:
文献类型:
--
作者:
Izzo, Federico;Runborg, Olof;Tsai, Richard
We present new higher-order quadratures for a family of boundary integral operators re-derived using the approach introduced in Kublik et al. (2013) [7]. In this formulation, a boundary integral over a smooth, closed hypersurface is transformed into an equivalent volume integral defined in a sufficiently thin tubular neighborhood of the surface. The volumetric formulation makes it possible to use the simple trapezoidal rule on uniform Cartesian grids and relieves the need to use parameterization for developing quadrature. Consequently, typical point singularities in a layer potential extend along the surface's normal lines. We propose new higher-order corrections to the trapezoidal rule on the grid nodes around the singularities. This correction is based on local decompositions of the singularity and is dependent on the angle of approach to the singularity relative to the surface's principal curvature directions. The proposed decomposition, combined with the volumetric formulation, leads to a special quadrature error cancellation.
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DOI:
10.1016/j.jcp.2006.03.021
发表时间:
2006-11
期刊:
J. Comput. Phys.
影响因子:
--
作者:
Lexing Ying;G. Biros;D. Zorin
通讯作者:
Lexing Ying;G. Biros;D. Zorin
影响因子:
1.7
作者:
Wu, Bowei;Martinsson, Per-Gunnar
通讯作者:
Martinsson, Per-Gunnar
影响因子:
4.1
作者:
Catherine Kublik;N. Tanushev;Richard Tsai
通讯作者:
Richard Tsai
影响因子:
2.1
作者:
Wu, Bowei;Martinsson, Per-Gunnar
通讯作者:
Martinsson, Per-Gunnar
DOI:
10.1137/s1064827596302060
发表时间:
1998-12
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
David J. Haroldsen;D. Meiron
通讯作者:
David J. Haroldsen;D. Meiron