一种固定网格上拉格朗日点追踪的快速算法  

An Efficient Lagrange Point Tracking Algorithm for Fixed Grids

作　　者：刘永丰[1] 明平剑[1] 张文平[1] 朱明刚[1] 倪大明[1] 

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001

出　　处：《计算物理》2010年第4期527-532,共6页Chinese Journal of Computational Physics

基　　金：哈尔滨工程大学基础科研基金(09005)资助项目

摘　　要：提出一种基于非结构网格颗粒追踪的改进算法.在已有算法的基础上,发展适用于包含任意多边形单元界面的混合网格算法,对不共面的空间多边形界面进行虚拟三角化,实现基于任意混合网格的拉格朗日追踪.数值试验证明方法可行可靠.通过对固定容器内喷入的不同数量颗粒进行追踪的数值测试及与文献对比,显示算法高效,在颗粒数为10000时,效率提高约47%.An improved particle tracking algorithm based on unstructured grids and hybrid grids with arbitrary polygon faces is presented.A dummy triangulation of non-planar polygon faces is carried out as tracking particles across arbitrary hybrid cell faces.Feasibility and reliability are shown through numerical examples.cpu time of the algorithm is compared with that of two algorithms introduced by Haselbacher et al for particles spray into a fixed chamber.The speed up can reach as high as 47% for 10 000 particle tracking.

关 键 词：非结构化网格 颗粒追踪 非平面 虚拟三角化 

分 类 号：O359[理学—流体力学]