An Energy-Based Summation-by-Parts Finite Difference Method For the Wave Equation in Second Order Form
An Energy-Based Summation-by-Parts Finite Difference Method For the Wave Equation in Second Order Form
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基于能量的二阶波动方程分部求和有限差分法
DOI:
10.1007/s10915-022-01829-4
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发表时间:
2022
影响因子:
2.5
通讯作者:
Kreiss, Gunilla
中科院分区:
文献类型:
--
作者:
Wang, Siyang;Appelö, Daniel;Kreiss, Gunilla
We develop a new finite difference method for the wave equation in second order form. The finite difference operators satisfy a summation-by-parts (SBP) property. With boundary conditions and material interface conditions imposed weakly by the simultaneous-approximation-term (SAT) method, we derive energy estimates for the semi-discretization. In addition, error estimates are derived by the normal mode analysis. The proposed method is termed as energy-based because of its similarity with the energy-based discontinuous Galerkin method. When imposing the Dirichlet boundary condition and material interface conditions, the traditional SBP-SAT discretization uses a penalty term with a mesh-dependent parameter, which is not needed in our method. Furthermore, numerical dissipation can be added to the discretization through the boundary and interface conditions. We present numerical experiments that verify convergence and robustness of the proposed method.
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影响因子:
2.5
作者:
Kristoffer Virta;K. Mattsson
通讯作者:
K. Mattsson
影响因子:
2.5
作者:
A. Nissen;G. Kreiss;M. Gerritsen
通讯作者:
M. Gerritsen
DOI:
10.1137/140973517
发表时间:
2015-12
期刊:
SIAM J. Numer. Anal.
影响因子:
--
作者:
D. Appelö;T. Hagstrom
通讯作者:
D. Appelö;T. Hagstrom
影响因子:
3.1
作者:
M. Almquist;Siyang Wang;J. Werpers
通讯作者:
J. Werpers
影响因子:
2.5
作者:
B. Erickson;J. Kozdon;Tobias W. Harvey
通讯作者:
B. Erickson;J. Kozdon;Tobias W. Harvey