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论文摘要

含阻尼项的SRLW方程的一个去耦合线性化差分格式

A decoupled linearized difference scheme for the SRLW equation with damping term

作者:魏杰(西华大学理学院);何丽(西华大学理学院);胡劲松(西华大学理学院)

Author:Wei Jie(School of Science, Xihua University);He Li(School of Mathematics, Xihua University);Hu Jin-Song(School of Science Xihua University)

收稿日期:2019-09-18          年卷(期)页码:2020,57(5):847-851

期刊名称:四川大学学报: 自然科学版

Journal Name:Journal of Sichuan University (Natural Science Edition)

关键字:阻尼耗散;SRLW方程;去耦合;线性化差分格式;收敛性;稳定性

Key words:Damping dissipation; SRLW equation; Uncoupled; Linearized difference scheme; Convergence; Stability

基金项目:国家自然科学基金(11701481),四川省应用基础研究项目(2019YJ0387)

中文摘要

本文对带有阻尼项的耗散SRLW方程的初边值问题进行了数值方法研究,提出了一个具有二阶理论精度的三层非耦合线性化差分格式.该格式解除了原方程中函数之间的耦合关系,大大提高了数值求解效率.此外,本文综合运用数学归纳法和离散泛函分析方法证明了格式的收敛性和稳定性.数值实验表明该方法是可靠的.

英文摘要

In this paper, a numerical method for the initial-boundary value problem of the dissipative SRLW equation with damping term is considered. A three-level uncoupled linearized difference scheme with second order accuracy is introduced. Though the maximum modulus estimation of the difference solution fails to be obtained, we still prove the convergence and stability of the numerical solution directly by the inductive method and discrete functional analysis. Finally, the efficiency of the method is demonstrated by numerical examples.

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