An efficient spectral-Galerkin approximation based on dimension reduction scheme for transmission eigenvalues in polar geometries
An efficient spectral-Galerkin approximation based on dimension reduction scheme for transmission eigenvalues in polar geometries
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基于降维方案的极坐标几何传输特征值的高效谱伽辽金近似
DOI:
10.1016/j.camwa.2020.05.018
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发表时间:
2020-09
影响因子:
2.9
通讯作者:
An Jing
中科院分区:
文献类型:
--
作者:
Ren Shixian;Tan Ting;An Jing
In this paper, we put forward an efficient spectral-Galerkin approximation in view of dimension reduction scheme for transmission eigenvalue problem in polar geometries. Firstly, we turn the original problem into an equivalent fourth order nonlinear eigenvalue problem. Then the fourth order nonlinear eigenvalue problem is transformed into a coupled fourth order linear eigenvalue system by introducing an auxiliary Poisson equation. Secondly, based on polar coordinate transformation, we further reduce the coupled fourth order linear eigenvalue system to a series of equivalent one-dimensional eigenvalue systems. Thirdly, we derive the essential polar condition and introduce the appropriate weighted Sobolev space according to the polar condition, and establish the weak form and the corresponding discrete form. In addition, by utilizing spectral theory of compact operators, we prove the error estimates of approximation eigenvalues and eigenvectors for each one-dimensional eigenvalue system. Finally, we provide ample numerical experiments, and the numerical results show the effectiveness of the algorithm and the correctness of the theoretical results.
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DOI:
10.1016/j.camwa.2015.03.002
发表时间:
2015-05
期刊:
Computers & Mathematics with Applications
影响因子:
--
作者:
Jing An;Jie Shen
通讯作者:
Jie Shen
影响因子:
1.4
作者:
Xia Ji;Yingxia Xi;Hehu Xie
通讯作者:
Hehu Xie
影响因子:
2.9
作者:
H. Haddar
通讯作者:
H. Haddar
DOI:
10.2307/j.ctvcm4h3p.17
发表时间:
2021-01
期刊:
Explorations in Numerical Analysis
影响因子:
--
作者:
Morten Hjorth-Jensen
通讯作者:
Morten Hjorth-Jensen
影响因子:
1.3
作者:
A. Kirsch
通讯作者:
A. Kirsch