萧山电厂温排水二维热污染数值模型

本文用二维水流方程和平面热扩散方程模拟电厂温排水在浦阳江中的扩散情况。在数值计算中,对二维水流方程采用显式迎流有限元方法,对平面热扩散方程采用显式直接差分法,并对这两种方法进行了耦合计算。比较全面地分析了电厂向浦阳江排水和取水后,浦阳江水温的分布特性,为选择电厂取排水的工程方式提供了判断依据。

A two-dimensional numerical model of thermodiffusion for cooling water drained by Xiaoshan Power Plant

In this paper, a two-dimensional flow equation and a thermodiffusion equation are used to simulate the diffusion feature of the cooling water drained into Puyang River by Xiaoshan Power Plant. In numerical calculation, an explicit forward finite element technique is applied in the two-dimensional flow equation, and an explicit direct finite difference technique in the thermodiffusion equation. As a result of coupling operation with these two techniques, a complete two-dimensional temperature field, being in the drained and intake area of Xiaoshan power Plant, is obtained and a criterion for selecting the outlet type of the Power Plant is provided.