REPEC非加热实验的RELAP程序模拟  

RELAP Simulation on the Non-heating Experiment under the External Reactor Vessel Cooling Condition

作　　者：李永春[1] 周卫华[1] 杨燕华[1] 匡波[1] 程旭[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《上海交通大学学报》2011年第3期408-412,共5页Journal of Shanghai Jiaotong University

基　　金：上海市重大技术装备(核电装备)研制项目(070107)

摘　　要：为研究压力容器外部冷却过程中的两相流动和传热现象,采用安全分析中通用的RELAP分析程序对REPEC非加热研究实验进行模拟计算,通过改变体积流量大小、注气方式和进出口面积对自然循环流率和外部冷却两相流动现象进行分析.结果表明,模拟结果与实验结果的一致性较好;循环流量随体积流量的提高呈现先增强后降低的趋势;进出口面积增大可以提高自然循环流量,但出口面积变化对循环流率和流动稳定性的影响更为显著.To study the two phase flow boiling phenomena under external reactor vessel cooling（ERVC）condition, the RELAP code was used to simulate the REPEC non-heating experiment.The simulation is mainly focused on the effect of air flow rate,injection distribution and inlet/outlet area on the natural circulation mass flow velocity and flow phenomena.A good agreement is achieved between the simulation results and experimental data.The natural circulation flow velocity increases with the increasing of air flow rate first and then decreases gradually.The mass flow velocity increases when enlarging the inlet/outlet areas.The flow velocity and flow stability are more sensitive to the outlet area.

关 键 词：压力容器外部冷却 大型先进压水堆 RELAP程序 自然循环 

分 类 号：TL364[核科学技术—核技术及应用]