AP1000反应堆下腔室三维流场计算与分析  

Three-dimensional Flow Field Analysis in Lower Plenum of AP1000

作　　者：刘彬[1] 景益[1] 

机构地区：[1]上海核工程研究设计院,上海200233

出　　处：《核电工程与技术》2009年第2期1-5,共5页Nuclear Power Engineering and Technology

摘　　要：分析反应堆下腔室流体流动特性是进行堆内构件结构设计和堆芯热工水力设计的前提。AP1000下腔室结构较西屋设计的二代压水堆核电站做了很大改变。本文用计算流体动力学软件Fluent6．3．26计算了这种新型结构的三维流场、压力分布以及堆芯入口流量分配。通过不同结构模型三维流场计算结果的分析，验证了AP1000结构设计的合理性及其优点。同时，分析结果表明理论计算方法具有实际的工程应用价值。The accurate analysis of the flow characteristics in the reactor pressure vessel （RPV） lower plenum is one of the most important design content in reactor structural design and thermal hydraulic design. The structure of AP1000 Iower plenum has changed so much, compared with the second generation of nuclear power plants designed by. Westinghouse. Computational fluid dynamics （CFD） program Fluent 6.3.26 is used to analyze the three-dimensional （3D） flow field, pressure distribution and core inlet flow distribution of four models for this new structure. The analysis result shows the actual engineering application of the analysis method. Meanwhile, the advantages of this new structure are found out after analyzing the results.

关 键 词：AP1000 下腔室 三维流场分析 堆芯入口流量分配 

分 类 号：TM623[电气工程—电力系统及自动化] TL351.6[核科学技术—核技术及应用]