A robust discontinuous Galerkin scheme on anisotropic meshes

A robust discontinuous Galerkin scheme on anisotropic meshes
复制标题

各向异性网格上的鲁棒不连续伽辽金方案

DOI:
10.1007/s13160-021-00474-y
复制
发表时间:
2021
影响因子:
0.9
通讯作者:
Tsuchiya Takuya
Tsuchiya Takuya
中科院分区:
数学4区
文献类型:
--
作者:
Kashiwabara Takahito;Tsuchiya Takuya

文献摘要

参考文献

被引文献

相似文献

间断Galerkin(DG)方法是通常的Galerkin有限元方法的推广。尽管对DG方法的研究很多,但无论是在理论误差分析还是在实际计算中,大多数DG方法都假设网格上的形状是正则的。在本文中,我们提出了一个新的对称内部惩罚DG格式与修改的惩罚项。我们表明,在不对网格施加形状规则性条件的情况下,新的DG格式继承了标准DG方法的所有良好性质,因此在各向异性网格上具有鲁棒性。数值实验证实了所得到的理论误差估计。
Discontinuous Galerkin (DG) methods are extensions of the usual Galerkin finite element methods. Although there are vast amount of studies on DG methods, most of them have assumed shape-regularity conditions on meshes for both theoretical error analysis and practical computations. In this paper, we present a new symmetric interior penalty DG scheme with a modified penalty term. We show that, without imposing the shape-regularity condition on the meshes, the new DG scheme inherits all of the good properties of standard DG methods, and is thus robust on anisotropic meshes. Numerical experiments confirm the theoretical error estimates obtained.
各向异性网格插值误差估计的一般理论
DOI: 10.1007/s13160-020-00433-z
发表时间: 2020
影响因子: 0.9
作者:
Ishizaka Hiroki;Kobayashi Kenta;Tsuchiya Takuya
通讯作者: Tsuchiya Takuya
DOI: 10.1016/j.camwa.2021.08.017
发表时间: 2021
期刊: Computers & Mathematics with Applications
影响因子: --
作者:
Ishizaka Hiroki;Kobayashi Kenta;Suzuki Ryo;Tsuchiya Takuya
通讯作者: Tsuchiya Takuya