【作者】 齐伟；

【导师】 郝瑞霞；

【作者基本信息】 太原理工大学 ， 水力学及河流动力学， 2005， 硕士

【摘要】 电力发展与国民经济的发展是密切相关的。当今的中国,是经济迅速发展的国家。为了保证我国经济的持续发展,同时解决经济增长带来的日益突出的电力供需矛盾,近年来,火/核电厂在沿海地区相继建起。发电厂的废热通过冷却水排入环境水域,对水环境产生了很大的影响,甚至造成热污染,而对环境水域温升分布做出确切的预报是防止热污染的关键之一。在近海区域,水环境中物质的迁移变化与潮流运动密切相关,所以在潮汐水域水环境问题的数值模拟研究中,必须首先要计算潮流场,然后再进行温度场的数值模拟分析。 本文的主要工作是开发研制模拟平面二维滨海水域温度场的软件,并结合深圳前湾发电厂工程实际,对其附近海域的潮流场、温度场进行了数值模拟,计算结果与该工程的原体观测资料进行了分析比较,获得了较满意的结果。具体包括: 1、建立RNG k—ε模型,采用有限体积法,在矩形交错网格更多还原

【Abstract】 Development of electricity is related to development of national economic very closely. Today, economic is developing very fast in China. To keep economic developing continuously and settle the problem of demand and supply of electricity, many power plants are built along the coast. Thermal discharge from the plant will effect the adjacent water area, to some extent, even to cause thermal pollution, the coastal environment is deteriorated badly. The key is to learn the thermal distribution in order to avoid thermal pollution. This question is studied in this paper. In estuaries and coastal seas, the tidal flow is a basic hydrodynamics factor, which effects other substance movement. So we should learn the tidal flow field in detail firstly. The main task of this paper is to study a two-dimensional software to simulate the hydraulic and thermal characteristics in tidywater. This software is applied in Shen Zhen Qian Wan Power Plant and the numerical prediction is in consistent with the survey data. Specified as follows:1 Using Finite Volume method, a two-dimensional RNG k— e turbulence model is established. Then on the staggered rectangular grid, the formula is discrete with Semi-Implicit Method for Pressure-Linked equations.2 The tidal field near the power plant harbor is simulated in this paper. The calculated result is analyzed and the figures of current fields are respectively drawn according to the result.3 Based on the hydrodynamic model, a numerical model is established to simulate the thermal transport and dispersion in the coastal water. According to the intake and outlet system of Qian Wan Power Plant, this calculation gives the temperature field.4 The calculated result is coincided with the survey data. So it can be concluded that this numerical model would be available of analogous engineering.更多还原