一种修正的隐式NND格式  

A MODIFIED IMPLICIT NND DIFFERENCE SCHEME

作　　者：夏南[1] 陈培基[2] 陆夕云[2] 庄礼贤[2] 

机构地区：[1]上海应用数学和力学研究所 [2]中国科技大学近代力学系

出　　处：《计算物理》1996年第3期379-384,共6页Chinese Journal of Computational Physics

摘　　要：应用隐式ＮＮＤ格式对一维激波管破膜问题进行了数值试验并与隐式矢通量分裂格式、显式ＮＮＤ格式进行了比较。将该格式推广到轴对称Ｅｕｌｅｒ方程。An implicit difference scheme solving Euler equations is developed based on NND ideas. Numerical test of diaphragm rupture in one dimensional shock tube is carried out. The results are compared with those of implicit flux vector fractorization and explicit NND scheme. Extended to axisymmetric Euler equations, this scheme can be used to calculate the transonic flow near M ∞ =1 for sphere cylinder.

关 键 词：数值计算 差分格式 欧拉方程 

分 类 号：O241[理学—计算数学]