计算物理 ›› 2006, Vol. 23 ›› Issue (1): 32-36.

• 论文 • 上一篇    下一篇

一类正交增强的阶谱六面体矢量单元构造

李江海, 孙秦   

  1. 西北工业大学航空学院, 陕西 西安 710072
  • 收稿日期:2004-09-17 修回日期:2005-03-01 出版日期:2006-01-25 发布日期:2006-01-25
  • 作者简介:李江海(1978-),男,湖南岳阳,博土生,主要从事飞行器隐身借构电磁数值计算设计,西北工业大学120信箱710072.
  • 基金资助:
    国家自然科学基金(10477018)资助项目

Constructing a Class of Orthogonal-reinforced Hierarchical Hexahedra Vector FE

LI Jiang-hai, SUN Qin   

  1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2004-09-17 Revised:2005-03-01 Online:2006-01-25 Published:2006-01-25

摘要: 利用阶谱正交多项式的优越性,从单元系统矩阵形成的角度分析阶谱六面体矢量单元的基函数,提出具有正交增强的阶谱六面体矢量单元(ORHHVFE)构造目的;并利用该目的构造的阶谱六面体矢量单元与其它阶谱六面体矢量单元(HHVFE)进行了金属腔本征模问题的数值计算对比实验.结果表明ORHHVFE具有与其它HHVFE同等的数值计算精度,且由ORHHVFE形成的有限元系统矩阵条件数获得了极大的改善.

关键词: 有限元, 阶谱六面体矢量单元, 正交增强

Abstract: By the merits of hierarchial orthogonal polynomial, a method of constructing a class of orthogonal-reinforced hierarchical hexahedra vector finite elements(ORHHVFE) to achieve a better condition of systematic matrix is presented, and the basis functions of hierarchical hexahedra vector finite elements(HHVFE) at the angle of conforming elemental systematic matrices are studied in detail. Numerical tests of the ORHHVFE constructed using 1-st Legendre polynomials based on the above method and the other HHVFE were carried out and compared. The results show that the ORHHVFE has the same numerical precision with the HHVFE, and the conditions of systematic matrices by the ORHHVFE are improved largely.

Key words: FEM, Hierarchical hexahedra vector finite elements, Orthogonal-reinforced

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