THERMAL STRATIFICATION ANALYSIS AND FATIGUE EVALUATION FOR PRESSURIZER SURGE LINE IN NUCLEAR POWER PLANT

被引：0
|
作者：
Xu, Xiao [1 ]
Liu, Pan [1 ]
Zhang, Guihe [1 ]
Wang, Dasheng [1 ]
jin, Ting [1 ]
机构：
[1] China Nucl Power Design Co Ltd, State Key Lab Nucl Power Safety Monitoring Techno, Shenzhen, Guangdong, Peoples R China
来源：
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING, 2017, VOL 2 | 2017年
关键词：
D O I：
暂无
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Thermal stratification of pressurizer surge line in nuclear power plant induced by the stratification of fluid results in additional stresses (system-dependent and system-independent stresses). These additional stresses are related to the thermal stratification distribution, such as temperature difference, stratification location, stratification length and boundary layer slope and thickness. This thermal stratification distribution is effected by several parameters such as turbulent penetration length and surge line slope. These influence factors are studied with numerical method. For the additional stresses, this study theoretically establishes the solution of the system-dependent stresses according to the thermal stratification distribution assumption. With the system-dependent and system-independent stresses, a complex three-dimension problem is simplified into a one-dimension. Using this effective one-dimension method, fatigue evaluation can be fast processed and accurate improved in engineering analyses.
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页数：7
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