摘要
对于具有周期性边界条件的色散方程,提出了一种高精度的交替分组显隐格式新解法(nAGEI).它不但无条件稳定,而且同已有的ASEI和AGE等交替方法比较,还具有精度高、收敛快的特点,数值试验表明新方法关于空间步长具有四阶收敛速度.
A new alternating group explicit-implicit scheme (nAGEI) for the dispersive equation with a periodic boundary condition is derived. This new unconditionally stable scheme has the fourth-order truncation error in space and quicker ratio of convergence than some known alternating group methods (eg. ASEI and AGE). A comparison of the accuracy of this method with some prior ASEI and AGE methods is showed in the numerical experiment.
出处
《应用数学和力学》
CSCD
北大核心
2008年第9期1107-1116,共10页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(10671113)
关键词
Dispersive方程
有限差分
交替分组显隐方法
高阶精度
绝对稳定
并行计算
dispersive equation
finite difference
alternating group explicit-implicit method(nAGEI)
high accuracy
unconditional stability
parallel computation