航空学报 > 1997, Vol. 18 Issue (6): 716-719

高阶有限元格式研究的一个新途径

段占元1, 童秉纲1, 姜贵庆2   

  1. 1. 中国科学技术大学研究生院, 北京, 100039;2. 北京空气动力学研究所, 北京, 100074
  • 收稿日期:1997-01-13 修回日期:1997-03-18 出版日期:1997-12-25 发布日期:1997-12-25

NEW WAY TO THE STUDY OF HIGH ORDER SCHEMES IN FEM

Duan Zhanyuan1, Tong Binggang1, Jiang Guiqing2   

  1. 1. Graduate School,University of Science and Technology of China, Beijing,100039;2. Beijing Institute of Aerodynamics,Beijing,100074
  • Received:1997-01-13 Revised:1997-03-18 Online:1997-12-25 Published:1997-12-25

摘要:

在作者提出的有限差分-有限元混合方法的基础上,将差分法中的三阶无波动、无自由参数的ENN格式较成功地推广应用到有限元法中,为发展高精度有限元格式提供了一个新途径。

关键词: 有限差分-有限元混合方法, ENN格式

Abstract:

Based on the Hybrid FD FE method by the present authors,the third order ENN (Essentially Non oscillatory,No free parameter)scheme in Finite Difference Method (FDM) is successfully applied to the Finite Element Method(FEM), which offers a new way to developing high order schemes in FEM.

Key words: FD-FE method, ENN scheme

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