中性层结下核电厂烟羽弥散数值模型有效性分析  

Analysis on Validity of Numerical Model for Plume Diffusion Under Neutral ABL in Nuclear Power Plant

作　　者：秦超[1] 王德忠[1] 马元巍[1] 于文丹 方栋[3] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]核工业二四○研究所,辽宁沈阳110032 [3]清华大学核能与新能源技术研究院,北京100084

出　　处：《原子能科学技术》2012年第7期837-841,共5页Atomic Energy Science and Technology

基　　金：教育部科技创新工程重大项目培育资金资助项目(708036)

摘　　要：采用CFD方法建立核电厂烟羽大气弥散模型,计算中性大气层结条件下烟羽分布。该模型采用垂直风速廓线表征的速度和温度梯度方式分类大气稳定度,将烟羽弥散模拟计算结果与经典解析理论计算结果进行对比,分析烟羽弥散CFD计算结果的抬升规律、烟羽空间浓度分布和扩散参数,对模型进行有效性分析。所得结果与经典解析结论基本一致。研究表明,该烟羽大气弥散模型可用于核电厂烟羽大气弥散过程的研究。In order to simulate the process of plume under neutral atmospheric stability in nuclear power plant,the method of CFD numerical simulation was applied.The line wall function of wind and temperature gradient was used to describe the atmospheric stability.Compared the analysis result of CFD numerical simulation with classic analysis theory,the law of plume elevating,concentration distribution in the space and diffusion parameters,which could validate the effectiveness of numerical simulation model were analyzed.The results are in accordance with the classic analysis theory result,and CFD numerical simulation can be used to solve the smoke plume diffusion problem in nuclear power plant.

关 键 词：核电厂烟羽大气弥散 扩散参数 CFD数值模拟 

分 类 号：TL817[核科学技术—核技术及应用]