Solving coupled nonlinear Schrodinger equations via a direct discontinuous Galerkin method  

出　　处：《Chinese Physics B》2012年第3期10-14,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant No 11171038）.

摘　　要：In this work, we present the direct discontinuous Galerkin （DDG） method for the one-dimensional coupled nonlinear Schr5dinger （CNLS） equation. We prove that the new discontinuous Galerkin method preserves the discrete mass conservations corresponding to the properties of the CNLS system. The ordinary differential equations obtained by the DDG space discretization is solved via a third-order stabilized Runge Kutta method. Numerical experiments show that the new DDG scheme gives stable and less diffusive results and has excellent long-time numerical behaviors for the CNLS equations.In this work, we present the direct discontinuous Galerkin （DDG） method for the one-dimensional coupled nonlinear Schr5dinger （CNLS） equation. We prove that the new discontinuous Galerkin method preserves the discrete mass conservations corresponding to the properties of the CNLS system. The ordinary differential equations obtained by the DDG space discretization is solved via a third-order stabilized Runge Kutta method. Numerical experiments show that the new DDG scheme gives stable and less diffusive results and has excellent long-time numerical behaviors for the CNLS equations.

关 键 词：direct discontinuous Galerkin method coupled nonlinear Schr6dinger equation massconservation 

分 类 号：O241.82[理学—计算数学] TN929.11[理学—数学]