河口潮流河段二维非恒定流数模研究及应用

The Research and Its Appncation of a 2-D Unsteady Flow Mathematical Model in Estuarine Tidal Reaches

本文基于ＳＩＭＰＬＥＲ算法，以长江河口南通河段狼山～四号坝河道为计算实例，建立了一套河口潮流河段二维非恒定流数学模型。实例计算和验证表明：计算的潮位和潮流过程与实测过程吻合较好，计算的流场合理。采用该数学模型还进行了南通华洋液化气有限公司拟建的化工码头对河道及防洪影响的工程计算，也取得了较满意的结果。

Based on SIMPLER algorithm, this paper establishes a set of 2-D unsteady flow mathemati-cal model in estuarine tidal reaches by using Langshan to Sihaoba river channel of Nantong reach in the estuary of the Yangtze river as an example. The calculation and its verification show that the calculated processes of tidal level and current fairly well coincide with field data, and the flow field of calculation is reasonable. By means of the mathematical model , the paper further carries Out calculationabout effects of the planned pier of Nantong Huayang Liquefied Natural Gas Co. Ltd on the river chan-nel and flood control nearby.