张力等参有限单元的构造及其在分离流动计算中的应用  

Construction of Tension Isoparametric Finite Element and its Application in Computation of Separated Flows

作　　者：朱刚[1] 胡庆康[1] 景思睿[1] 谷传纲[1] 

机构地区：[1]西安交通大学,西安710049

出　　处：《应用力学学报》1993年第4期65-68,共4页Chinese Journal of Applied Mechanics

基　　金：国家教委博士点基金

摘　　要：本文利用张力样条函数,构造了一种十二节点张力等参有限单元。它不仅具有等参元的一切特点,而且具有张力可调的独特性质,从而在一定程度上可调整插值函数以达到较好的收敛性和计算精度。在分离流动计算中,尤其可以显示出它独特的优越性,本文的两个分离流动算例说明了这一点。By Using the tension spline function,a type of twelve-nodes tension isoparametric finite element has been constructed.Not only does it possess all of the characteristics of isoparametric finite element,but also it does a distinct quality of the mobility of tension.So we can adjust interpolation functions in order to get better convergency and accuracy.This outstanding advantage is shown particularly in computation of separated flow.Two examples are demonstrated in this paper.

关 键 词：有限元法 样条函数 分离流 流场 

分 类 号：O351.3[理学—流体力学]