中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2011, Vol. 30 ›› Issue (1): 112-114.

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基于非MUSCL 型WENO 格式的溃坝波数值模拟

张文忠1,2   

  1. 1.重庆交通大学 理学院,重庆 400074; 2.重庆大学 资源与环境学院,重庆 400030
  • 收稿日期:2010-06-01 修回日期:2010-07-18 出版日期:2011-02-15 发布日期:2015-01-22
  • 作者简介:张文忠( 1976—) ,男,河北故城人,硕士,主要从事科学与工程中的高性能计算。E-mail: wzhongzh@163.com。
  • 基金资助:
    重庆交通大学青年基金项目( XN( 2009) 18)

Numerical Simulation of Dam-Break Wave Based on Non-MUSCL WENO

ZHANG Wen-zhong1,2   

  1. 1. School of Science,Chongqing Jiaotong University,Chongqing 400074,China; 2. School of Resources & Environmental Science,Chongqing University,Chongqing 400030,China
  • Received:2010-06-01 Revised:2010-07-18 Online:2011-02-15 Published:2015-01-22

摘要: 采用5 阶精度的非MUSCL 型WENO 格式对界面变量进行数值重构,形成了高精度的数值离散格式,再对其 捕捉溃坝波的能力进行分析。针对一维浅水方程,用线性平均对方程组进行局部线性化,引入特征变量进行解耦, 对解耦方程中的通量经LF 分裂后采用WENO 重构,数值模拟溃坝洪水向下游的推进过程,得到沿程的水位和流速 分布。通过和理论解的比较表明,基于非MUSCL 型WENO5 重构的数值格式具有很高的分辨率,展现了溃坝涌波 的运动特性。

关键词: 溃坝, 加权本质无振荡, 数值模拟

Abstract: Fifth-order non-MUSCL weighed essentially non-oscillatory is applied to reconstruct the interface variables. A high resolution scheme is proposed and the performance of capturing dam-break waves is analyzed. After some part is linearized through linear average equation,the lax-friedrichs splitting and WENO reconstruction is used for the decoupled interface flux. The process of flood pushing to the downriver is simulated numerically,which finds the velocity distribution and depth distribution of the flood. By comparing with the results of the analytical solutions,the schemes with non-muscl WENO5 reconstruction has higher resolution,which shows the movement characteristics of dam-break wave.

Key words: dam-break, weighed essentially non-oscillatory, numerical simulation

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