二维浅水流动的有限元并行数值模拟  

2-D shallow water flow simulation using parallel arithmetic for FEM

作　　者：江春波[1] 安晓谧[1] 张庆海[1] 

机构地区：[1]清华大学水利水电工程系,北京100084

出　　处：《水利学报》2002年第5期65-68,共4页Journal of Hydraulic Engineering

基　　金：国家自然科学基金 ( 5 99790 13) ;清华大学基础研究基金 (JC2 0 0 10 0 6)资助项目

摘　　要：建立了并行计算系统工作站机群 ,实现了浅水流动的并行数值模拟 .采用信息传递接口 (MPI)为通讯库 ,实现了基于图论的区域剖分方法 ,并且提出了一种显隐交错的数值格式 ,该格式具有数值计算精度高 ,适合并行计算的特点 .计算了较低雷诺数下 (R <30 0 )方柱绕流的情况 .并与Suzuki及Breuer的结果进行了比较 .The cluster of workstation for parallel arithmetic is established to carry out the large-scale numerical simulation of shallow water flow. The message passing interface(MPI) is applied. The Delauney triangulation algorithm is used to realize the automatic generation of unstructured mesh and domain decomposition is based on graph-based algorithm. A brand-new numerical scheme, namely explicit and implicit interleaving scheme(EII), is proposed. The flow around a square column at low Reynolds number(R e<300) is calculated and the result is in good agreement with that of predecessors.

关 键 词：二维浅水流动 有限元 数值模拟 水环境 洪水预报 河流动力学 

分 类 号：TV131.2[水利工程—水力学及河流动力学]