Quadrature by Two Expansions for Evaluating Helmholtz Layer Potentials
Quadrature by Two Expansions for Evaluating Helmholtz Layer Potentials
复制标题
用于评估亥姆霍兹层势的两次展开求积
DOI:
10.1007/s10915-023-02222-5
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发表时间:
2023
影响因子:
2.5
通讯作者:
Cho, Min Hyung
中科院分区:
文献类型:
--
作者:
Weed, Jared;Ding, Lingyun;Huang, Jingfang;Cho, Min Hyung
In this paper, a Quadrature by Two Expansions (QB2X) numerical integration technique is developed for the single and double layer potentials of the Helmholtz equation in two dimensions. The QB2X method uses both local complex Taylor expansions and plane wave type expansions to achieve a resulting representation which is numerically accurate for all target points inside a leaf box in the fast multipole method (FMM) hierarchical tree structure. The QB2X method explicitly includes nonlinear dependency of the boundary geometry in the plane wave expansions, thereby providing for higher-order representations of both the boundary geometry and density functions in the integrand, with its convergence following standard FMM error analysis. Numerical results are presented to demonstrate the performance of the QB2X method for Helmholtz layer potentials using one expansion center for the entire FMM-leaf box for both flat and curved boundaries with various densities.
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DOI:
10.1016/j.jcp.2017.04.062
发表时间:
2016
期刊:
J. Comput. Phys.
影响因子:
--
作者:
M. Rachh;A. Klöckner;M. O’Neil
通讯作者:
M. O’Neil
影响因子:
1.7
作者:
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通讯作者:
Martinsson, Per-Gunnar
DOI:
--
发表时间:
1991
期刊:
SIAM journal on computing (Print)
影响因子:
--
作者:
Myong;S. Sutherland
通讯作者:
S. Sutherland
影响因子:
--
作者:
Tingyu Wang;Rio Yokota;L. Barba
通讯作者:
L. Barba
影响因子:
10.2
作者:
A. Barnett
通讯作者:
A. Barnett