摘要
为了弄清黄海辐射沙脊群这一具有广阔潮间带典型海域的水动力及污染物扩散稀释情况,在该海域找到较为理想的污染物排放位置,采用沿深垂向平均二维数值模式对该海域的潮流场和物质扩散场进行了模拟,模拟过程中采用变网格技术和改进的“干湿法”处理动边界问题.通过海域水体余流场和几个典型位置Lagrange水质点运动轨迹的计算,分析了余流场对污染物运移的影响,并得到了该海域较为理想的污染物排放位置.
By use of the 2-D numerical model averaged in vertical direction, the numerical simulation was performed of the tidal current and pollutant diffusion in a typical sea area of radial sandy ridges with wide tidal range in the Yellow Sea to reveal the hydraulic condition and pollutant diffusion in this area, and further to find the perfect positions for pollutant discharge. In the study, the changed grid technology and the improved 'dry-wet' method were also used to deal with the moving boundary. By calculation of the residual current field of the studied area and the track of Lagrange water particles at several typical positions, the effects of residual current field on pollutant diffusion were analyzed, and the perfect positions for pollutant discharge were obtained as well.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第4期472-475,共4页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金资助项目(50279007)
关键词
黄海
辐射沙脊群
水环境
污染物扩散
拉格朗日余流
动边界
<Keyword>Yellow Sea
radial sandy ridge
water environment
pollutant diffusion
Lagrange residual current
moving boundary
