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
梁栋
中科院分区:
数学2区
文献类型:
--
作者:
邓定文;梁栋

文献摘要

参考文献

被引文献

相似文献

非线性波动方程广泛应用于非线性光学、固体物理和量子场论等众多科学领域。在本文中,针对非线性波动方程开发了两种高性能紧凑交替方向隐式(ADI)方法。第一个方案是非线性波动方程的三级非线性差分格式,其中在x方向上,通过Thomas算法求解一系列线性三对角系统,而在y方向上,通过牛顿迭代法计算非线性代数系统。相比之下,第二种方案是线性的,并且允许在x和y方向上多次使用Thomas算法,因此节省了大量的时间成本。通过使用离散能量分析方法,结果表明两种方案都能在H 1 范数中达到O(τ4 + h 4 x + h 4 y ) 阶的数值精度。同时,利用不动点定理和系数矩阵x的对称正定性质,证明了它们都是唯一可解的。此外,所提出的方案还扩展到耦合正弦-戈登波动方程和阻尼波动方程的数值解。最后,数值结果证实了收敛级并展示了我们算法的效率。
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.
DOI: 10.1002/num.20014
发表时间: 2004-11
影响因子: 3.9
作者:
Zhiyue Zhang
通讯作者: Zhiyue Zhang
DOI: 10.1016/j.apnum.2010.12.004
发表时间: 2011-04
影响因子: 2.8
作者:
Zhen Gao;Shusen Xie
通讯作者: Zhen Gao;Shusen Xie
DOI: 10.1016/j.chaos.2005.08.145
发表时间: 2006-05
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
DOI: 10.1016/j.wavemoti.2005.04.007
发表时间: 2003-12
期刊: Wave Motion
影响因子: 2.4
作者:
C. Popov
通讯作者: C. Popov