计算物理 ›› 2009, Vol. 26 ›› Issue (3): 371-377.DOI: 10.3969/j.issn.1001-246X.2009.03.006

• 研究论文 • 上一篇    下一篇

耗散紧致格式的频谱特性研究与应用

毛枚良, 邓小刚, 李松   

  1. 中国空气动力研究与发展中心, 四川 绵阳 621000
  • 收稿日期:2007-12-11 修回日期:2008-07-05 出版日期:2009-05-25 发布日期:2009-05-25
  • 作者简介:毛枚良(1965-),男,湖南涟源,研究员,博士,主要从事计算流体力学算法及其应用研究,四川绵阳211信箱621000.
  • 基金资助:
    国家自然科学基金创新群体基金(批准号10621062)资助项目

Spectrum Characteristic of Dissipative Compact Schemes and Application to Couette Flow

MAO Meiliang, DENG Xiaogang, LI Song   

  1. China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2007-12-11 Revised:2008-07-05 Online:2009-05-25 Published:2009-05-25

摘要: 采用Fourier分析方法,给出线性耗散紧致格式和基于m级Runge-Kutta时间积分方法的全离散格式的频谱特性,并应用五阶耗散紧致格式模拟典型高频波传播和超声速平面Couette流动的特征值问题及其稳定性边值问题,展示耗散紧致差分格式良好的频谱特性.

关键词: 高精度格式, 耗散紧致格式, Fourier分析, 群速度, 相速度

Abstract: Spectrum characteristic of linear dissipative compact schemes and corresponding fully-discrete forms based on m-order Runge-Kutta algorithm are investigated by Fourier analysis.A 5-th order scheme is empolyed to study propagation of a classical high-frequency wave and eigen-value problem of a supersonic plane Couette flow as well as its boundary value stability.Numerical results demonstrate favorable spectrum characteristic of dissipative compact schemes.

Key words: high-order accurate scheme, dissipative compact scheme, Fourier analysis, group velocity, phase velocity

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