考虑冷却水速度分布特征的凝汽器数值模拟计算  

Numerical Simulation on a Condenser Considering Velocity Distribution of the Cooling Water

作　　者：凌佳喜 易思强 廖先伟 王昌朔 杨建明[1] LING Jiaxi;YI Siqiang;LIAO Xianwei;WANG Changshuo;YANG Jianming(School of Energy and Environment,Southeast University,Nanjing 210096,China;Sichuan Electric Power Design and Consulting Co.,Ltd.,Chengdu 610041,China;Key Laboratory of Nuclear Reactor System Design Technology,Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]东南大学能源与环境学院,南京210096 [2]四川电力设计咨询有限责任公司,成都610041 [3]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《动力工程学报》2020年第8期646-653,共8页Journal of Chinese Society of Power Engineering

摘　　要：在管壳侧分别建立多孔介质数值模型的基础上,提出一种将管侧多孔介质模型计算所得冷却水速度分布注入到壳侧多孔介质模型的方法,实现凝汽器管壳侧流动与传热的耦合计算。在Fluent平台上开发了读取管侧冷却水速度分布和将其注入到壳侧的自定义程序,并对某600 MW机组表面式凝汽器进行了管壳侧耦合数值模拟计算。结果表明:该耦合计算方法是可行的,基于管侧冷却水速度分布不均的凝汽器性能数值模拟更符合实际。Based on the numerical models respectively established for the steam and water side of a condenser,an innovative method was proposed to import the velocity distribution of cooling water obtained from the calculation of porous media model on water side into the porous media model on steam side to realize the coupling calculation of flow and heat transfer on both sides.A self-defined program was developed on the Fluent platform for reading the velocity distribution on water side and importing it into the steam side.A coupling simulation was conducted for the steam and water side of a surface condenser in a 600 MW unit.Results show that the coupling calculation method proposed is feasible,and the numerical simulation of condenser performance is more reasonable based on uneven velocity distribution of cooling water on the water side.

关 键 词：表面式凝汽器 多孔介质 自定义程序 数值模拟 

分 类 号：TK284.1[动力工程及工程热物理—动力机械及工程]