摘要
介绍浅水中污染物扩散分析中的有限元法.分析包括两个部分:1)流场速度、水面高度的计算;2)根据扩散模型计算污染物浓度场.联合使用了自适应网格技术以期提高解的精度,同时减少计算时间和计算机内存的消耗.通过几个有已知解的实例验证了有限元公式和计算机程序.最后,使用这种联合方法分析泰国Chao Phraya河附近海湾中的污染物扩散.
A finite element method for analysis of polluter dispersion in shallow water is presented. The analysis is divided into two parts： 1 ） computation of the velocity flow field and water surface elevation, and 2） computation of the pollutant concentration field from the dispersion model. The method was combined with an adaptive meshing technique to increase the solution accuracy , as well as to reduce the eomputational time and computer memory. The finite element formulation and the computer programs were validated by several examples that have known solutions.In addition ,the capability of the combined method was kemonstrated by analyzing pollutant dispersion in Chao Phraya River near the gulf of Thailand .
出处
《应用数学和力学》
CSCD
北大核心
2005年第12期1425-1435,共11页
Applied Mathematics and Mechanics
基金
泰国研究基金(TRF)资助项目
关键词
浅水
污染物扩散
自适应网格技术
有限元法
shallow water
pollutant dispersion
adaptive meshing technique
finite dement method
