奥里油电厂烟羽传输与扩散的数值模拟  

Numerical Simulation of Plume Transmission and Dispersion in Orimulsion-Fired Power Plant

作　　者：梁平[1] 刘亮亮[1] 龙新峰[2] 

机构地区：[1]华南理工大学电力学院,广东广州510640 [2]华南理工大学化工与能源学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2008年第6期114-117,123,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(05006518)

摘　　要：奥里油燃烧后排放物的温度较高,SO2浓度较大.为了对电厂周围环境质量进行分析,采用CFD软件模拟了奥里油电厂高架连续点源的烟羽传输与扩散,根据湛江市有代表性的年平均气象数据,采用Fluent软件分析了不同大气风速和湍流度下奥里油电厂的烟羽传输与扩散规律,给出了描述大气污染的两个重要参数——最大落地浓度和烟羽中心线抬升高度的下风向沿程变化情况.计算结果表明,当大气风速为3m/s、湍流度为10%和大气风速为6m/s、湍流度为5%时,SO2最大落地浓度分别为820μg/m3和440μg/m3.数值计算结果与烟气扩散理论结果及经验数据相符合,证明了该模型的有效性.It is necessary to analyze the environmental quality surrounding the orimulsion-fired power plant due to the high temperature and high SO2 concentration of the emissions. In this paper, the computational fluid dynamics （CFD） software is used to simulate the plume transmission and dispersion of high-chimney emission point-source in an orimulsion-fired power plant. Then, the Fluent software is employed to analyze the plume transmission and dispersion rules at different wind velocities and turbulence intensities according to the typical average meteorological data of Zhanjiang City, and to calculate two important factors, namely, the maximum concentration on the ground along the plume axis and the plume rising height along the plume axis. Calculated results show that, when the air velocity is 3 m/s and the turbulence is 10% or the air velocity is 6 m/s and the turbulence is 5%, the calculated maximum SO2 concentration on the ground is 820 or 440μg/m^3, which accords well with the theoretical and empirical data. It is thus concluded that the proposed model is effective.

关 键 词：奥里油电厂 烟羽 传输 扩散 数值模拟 

分 类 号：TK282[动力工程及工程热物理—动力机械及工程]