摘要
自由拉氏方法是模拟计算二维大变形可压缩流的一种新的尝试。它放弃了传统拉氏方法中网格间固定连接的约束,在计算中每个循环都要检验并且修改节点间的相邻关系,从而能够自动适应变形流动对网格的扭曲。此外我们对自由面和内界面也作了相应的处理。自由拉氏方法被用于流体或流体弹塑性流的计算并且给出了较为满意的结果。
Free-Lagrange Method is a new attempt to simulate two dimensional compressible flow with large distortion. It gives up the restraint usually required in traditional Lagrangian method to make fixed connectivity among cells . In FLM the neighbor relation among notes is tested and revised in each cycle , therefore adapti flow distortion naturally . In addition we have made special treatments for free surfaces and interfaces . The application of FLM to hydro -elastic -plastic flow proves to be satisfactory .
出处
《计算物理》
CSCD
北大核心
1990年第2期211-227,共17页
Chinese Journal of Computational Physics
关键词
自由拉氏法
滑移界面
Voronoi网格
free -lagrange methods, slide lines, neighbor-relation adjustment, Voronio mesh, penetration test.
