水道港口2011，Vol.32Issue(6)：434-439,6.
瓯江下游河段污染物质滞留时间数值模拟研究
Numerical simulation of residence time in Oujiang estuary
摘要
Abstract
A numerical modeling study to predict the residence time of a conservative tracer in Oujiang estuary was given in this paper. An integrated hydrodynamic-dispersion model was used to predict the average residence time in the estuary for various tidal range and river discharge conditions. The estuary from Meiao to the river mouth was divided into eight segments. Five representative river discharges and three tidal ranges were selected to give the computational conditions in the numerical simulations. Respectively, the residence time of each segment under different conditions was calculated to investigate the influences of drainage, tidal range and initial condition. The numerical results show that in Oujiang estuary the general regression relationships between the residence time and river discharge are power function,and linear function between the residence time and tidal range. Because of much greater variance of river discharge than tidal range, synthetically, the residence time is mainly affected by drainage. The initial condition affects the average residence time significantly. The average residence time for low tidal level is much greater than that for high tidal level.关键词
滞留时间/数值模拟/瓯江Key words
residence time/ numerical simulation/ Oujiang estuary分类
资源环境引用本文复制引用
李谊纯..瓯江下游河段污染物质滞留时间数值模拟研究[J].水道港口,2011,32(6):434-439,6.基金项目
广西科学院基本科研业务费资助项目(10YJ25HY03) （10YJ25HY03）
