核电厂稳压器波动管内热分层效应分析

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Analysis of Thermal Stratification Effect in Surge Line of Pressurizer in Nuclear Power Plants

1. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Iustitate of China, Chengdu, 610041, China;
2. College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, China

摘要: 利用CFD方法对核电厂稳压器波动管以及与之相连接主管道内反应堆冷却剂进行流固耦合共轭流动传热计算,获得在升温瞬态条件下稳压器波动管内冷却剂的温度场分布,证实在水平段内可产生明显的热分层结构。在此基础上,利用有限元分析软件,结合波动管的结构特征,建立稳压器波动管的热分层应力计算模型,并对稳压器波动管的应力水平进行计算分析,给出稳压器波动管中的应力场分布特性。
- 核电厂 /
- 波动管 /
- 热分层 /
- 分层准则数
Abstract: In this paper, the numerical simulation of the three dimensional flow fields is performed for the surge line of the nuclear power plant. The simulation incorporates the coupling effect between the solid pipes and the liquid coolant and the conjugate effect between the heat transfer and fluid flow. The basic structures of the flow field and the temperature distribution are obtained in the surge line under designed heat-up transient. Furthermore, the stress analysis Finite Element Analysis（FEA） model is established according to the structure features of the surge line.The model is used for the stress analysis of the surge line under corresponding transient.
- Nuclear power plant /
- Surge line /
- Thermal stratification /
- Criterion numeral of Stratification