Numerical simulation of thermal-hydraulic characteristics in a closed natural circulation system

被引：4
|
作者：
Wang, Qiang [1 ]
Gao, Puzhen [1 ]
Xu, Yuting [1 ,2 ,3 ]
Zhang, Yinxing [1 ]
Lin, Yuqi [1 ]
Wang, Zhongyi [1 ]
机构：
[1] Harbin Engn Univ, Coll Nucl Sci & Technol, Fundamental Sci Nucl Safety & Simulat Technol Lab, Harbin 150001, Heilongjiang, Peoples R China
[2] Chinese Acad Customs Adm, Qinhuangdao 066004, Hebei, Peoples R China
[3] Tsinghua Univ, Inst Nucl & New Energy Technol INET, Beijing 100084, Peoples R China
来源：
THIRD INTERNATIONAL CONFERENCE ON ENERGY ENGINEERING AND ENVIRONMENTAL PROTECTION | 2019年 / 227卷
关键词：
INSTABILITIES;
D O I：
10.1088/1755-1315/227/2/022001
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In order to enhance the safety of nuclear energy, natural circulation served as a passive technology is widely used. Accordingly, an investigation associated with thermal-hydraulic characteristics for natural circulation system is made in this work. Numerical simulation based on RELAP5 code is performed especially for flow instability phenomenon. The results indicate that flashing and condensation are two important factors for low pressure natural circulation two-phase system. For all this, the tolerance of natural circulation to flashing oscillation could be enhanced effectively with the increase of system pressure. Under high pressure condition, the flowrate might shrink to a new equilibrium state from flashing-induced oscillation. The simulation results and analysis could contribute to a more extensive utility of natural circulation mechanism for nuclear energy.
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页数：6
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