一个高阶各向异性三角形元超逼近性分析  

SUPERCLOSE ANALYSIS OF A HIGHER ORDER ANISOTROPIC TRAINGULAR FINITE ELEMENT

作　　者：马戈[1] 许洪范[1] 

机构地区：[1]南阳理工学院数学系,河南南阳473004

出　　处：《南阳理工学院学报》2009年第3期99-102,共4页Journal of Nanyang Institute of Technology

摘　　要：讨论了各向异性网格下用一个二次三角形元逼近二阶椭圆问题,利用积分恒等式等一些技巧导出了其超逼近性质,数值算例验证了理论分析的正确性。A quadratic triangular element is discussed to solve the second order elliptic problem on anisotropic meshes. The superclose property is obtained by the use of the integral identity and some other techniques. The numerical results were given to verify the theoretical analysis.

关 键 词：二次三角形元 超逼近 各向异性网格 

分 类 号：O242.21[理学—计算数学]