长江口流场数值模拟中流速开边界条件的处理  

Study on open boundary condition for numerical simulation of flow field at Yangtze River Estuary

作　　者：龚政[1] 张长宽[2] 张东生[2] 张君伦[2] 

机构地区：[1]水利部太湖流域管理局水利发展研究中心,上海200434 [2]河海大学交通与海洋工程学院,江苏南京210098

出　　处：《河海大学学报（自然科学版）》2003年第6期682-685,共4页Journal of Hohai University(Natural Sciences)

基　　金：水利部科技创新项目;教育部科学技术研究重点项目(01100)

摘　　要：建立了长江口平面二维流场数学模型,上游开边界取在徐六泾断面,外海开边界在佘山以东.上游流速开边界条件采用新的流量过程校正法进行订正,较好地反映了上游径流对河口流场的效应,弥补了当缺乏上游实测流速资料时,用普通的流速开边界处理方法所引起的计算偏差.A numerical model is developed for 2D flow field at the Yangtze River Estuary with the Xuliujing section taken as the upstream open boundary and the east of Sheshan as the open boundary of the outer sea. The runoff procedure emendation method is adopted to modify the open boundary condition of upstream flow velocity. It well reflects the effect the upstream runoff on the flow field at the estuary, overcoming the error of calculation with the common open boundary treatment method induced by lack of measured data of upstream flow velocity.

关 键 词：长江口 流场数值模拟 流速开边界条件 水位 流速 流量过程校正法 

分 类 号：TV131.4[水利工程—水力学及河流动力学]