用深度平均■—■模式数值模拟天然河流中污染物质的排放

NUMERICAL SIMULATION OF DISCHARGING POLLUTANTS INTO NATURAL RIVER WITY DEPTH-AVERAGE ■-■MODEL

本文用紊流■—■模式封闭,考虑水深变化的深度平均控制方程组及其离散化,用压力修正算法(SIMPLE—C)对天然河流中,岸边废热排放近区和过渡区的速度场、温度场进行了数值模拟。对于用深度平均数学模型模拟河流、湖泊、近海等天然水域中的污染场,有一定的现实意义。

In this paper,the velocity and temperature fields in the shore and transitonal zones,caused by the bank-discharge of waste heat into a river,have been simulated numerically by use of turbulence K-(?) model closure,depth-average control equations and its discretization, velocity pressure correction algorithm (SIMPLE-C). It has a certain practical significance by using depth-average mathematical models for simulating and predicting pollutant fields in the natural water bodies,such as the rivers,lakes, coastal waters,and so on.