A linearized high-order difference scheme for the fractional Ginzburg-Landau equation

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• 作者：Zhao-peng Hao and Zhi-zhong Sun
• 刊名：Numerical Methods for Partial Differential Equations
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：33
• 期：1
• 页码：105-124
• 全文大小：375K
• ISSN：1098-2426

文摘

The numerical solution for the one-dimensional complex fractional Ginzburg–Landau equation is considered and a linearized high-order accurate difference scheme is derived. The fractional centered difference formula, combining the compact technique, is applied to discretize fractional Laplacian, while Crank–Nicolson/leap-frog scheme is used to deal with the temporal discretization. A rigorous analysis of the difference scheme is carried out by the discrete energy method. It is proved that the difference scheme is uniquely solvable and unconditionally convergent, in discrete maximum norm, with the convergence order of two in time and four in space, respectively. Numerical simulations are given to show the efficiency and accuracy of the scheme.