The time fourth-order compact ADI methods for solving two-dimensional nonlinear wave equations
The time fourth-order compact ADI methods for solving two-dimensional nonlinear wave equations
复制标题
求解二维非线性波动方程的时间四阶紧凑ADI方法
DOI:
10.1016/j.amc.2018.02.010
复制
发表时间:
2018-07
影响因子:
4
通讯作者:
梁栋
中科院分区:
文献类型:
--
作者:
邓定文;梁栋
Nonlinear wave equation is extensively applied in a wide variety of scientific fields, such as nonlinear optics, solid state physics and quantum field theory. In this paper, two high- performance compact alternating direction implicit (ADI) methods are developed for the nonlinear wave equations. The first scheme is developed a three-level nonlinear difference scheme for nonlinear wave equations, where in x -direction, series of linear tridiagonal sys- tems are solved by Thomas algorithm, while in y -direction, nonlinear algebraic system are computed by Newton’s iterative method. In contrast, the second scheme is linear, and per- mits the multiple uses of the Thomas algorithm in both x - and y -directions, thus it saves much time cost. By using the discrete energy analysis method, it is shown that both the developed schemes can attain numerical accuracy of order O(τ4 + h 4 x + h 4 y ) in H 1 -norm. Meanwhile, by the fixed point theorem and symmetric positive-definite properties of co- efficient matri x , it is proved that they are both uniquely solvable. Besides, the proposed schemes are extended to the numerical solutions of the coupled sine-Gordon wave equa- tions and damped wave equations. Finally, numerical results confirm the convergence or- ders and exhibit efficiency of our algorithms.
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影响因子:
3.9
作者:
Zhiyue Zhang
通讯作者:
Zhiyue Zhang
影响因子:
2.8
作者:
Zhen Gao;Shusen Xie
通讯作者:
Zhen Gao;Shusen Xie
影响因子:
7.8
作者:
A. Wazwaz
通讯作者:
A. Wazwaz
DOI:
10.1016/j.amc.2009.10.001
发表时间:
2010
期刊:
Appl. Math. Comput.
影响因子:
--
作者:
A. Shah;Li Yuan;Aftab Khan
通讯作者:
A. Shah;Li Yuan;Aftab Khan
影响因子:
2.4
作者:
C. Popov
通讯作者:
C. Popov