低压低干度自然循环流量漂移和热虹吸现象的动态模拟

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基金项目:

国家杰出青年基金项目(50325620)

国家自然科学基金项目(10372050)

Simulation of Flow Excursion and Thermal Siphon under Natural Circulation Condition with Lower Pressure and Lower Quality

Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

摘要: 采用一维两相4方程漂移流模型编制程序,对5MW核供热堆模拟实验回路中发生的流量漂移现象进行数值模拟,同时分析热虹吸的机理,并对其进行动态模拟。结果表明,该程序可以对自然循环系统的静态不稳定性进行模拟,对流量漂移现象的模拟基本与实验相符。
- 低压 /
- 低干度 /
- 自然循环 /
- 热虹吸 /
- 流量漂移 /
- 动态模拟
Abstract: In the experiments performed in HRTL-5,the system was in static instability under some conditions.In this paper,based on the drift flow model,the simulation of flow excursion phenomenon was achieved under HTRL-5 condition.In the same time,the mechanism analysis and the simulation of thermal siphon process were also performed.The result shows that the program can be used to to simulate the static instability of natural circulation system,and the simulation of the excursion phenomenon matches up to the experiment result basically.
- Lower pressure /
- Lower quality /
- Natural circulation /
- Thermal siphon /
- Flow excursion /
- Simulation