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Alternating direction implicit method for solving two-dimensional cubic nonlinear Schrodinger equation
DOI:10.1016/j.cpc.2012.01.006.png)
摘要
En 中文
In this paper, four alternating direction implicit (ADI) schemes are presented for solving two-dimensional cubic nonlinear Schrodinger equations. Firstly, we give a Crank-Nicolson ADI scheme and a linearized ADI scheme both with accuracy O (Delta t(2) + h(2)), with the same method, use fourth-order Pade compact difference approximation for the spatial discretization: two HOC-ADI schemes with accuracy O (Delta t(2) + h(4)) are given. The two linearized ADI schemes apply extrapolation technique to the real coefficient of the nonlinear term to avoid iterating to solve. Unconditionally stable character is verified by linear Fourier analysis. The solution procedure consists of a number of tridiagonal matrix equations which make the computation cost effective. Numerical experiments are conducted to demonstrate the efficiency and accuracy, and linearized ADI schemes show less computational cost. All schemes given in this paper also can be used for two-dimensional linear Schrodinger equations. (c) 2012 Elsevier B.V. All rights reserved.
Keyword:
Cubic nonlinear Schrodinger equation
Alternating direction implicit
High-order compact
Extrapolation technique
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期刊
IF:
3.4
论文数:
1.2W
被引数:
3.7W
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引用论文
Numerical studies on the split-step finite difference method for nonlinear Schrodinger equations非线性薛定谔方程的分步有限差分方法的数值研究

