Evaluation of thermal hydraulic safety of a nuclear fuel assembly in a mast assembly of nuclear power plant

被引：2
|
作者：
Kim, YoungSoo [1 ,3 ]
Kim, HuiYung [1 ]
Bak, JinYeong [1 ]
Jeong, JaeJun [1 ]
Jeon, JaeYeong [2 ]
Yun, ByongJo [1 ]
机构：
[1] Pusan Natl Univ, Sch Mech Engn, Busan 609735, South Korea
[2] Power MnC Co Ltd, Yangsan Si 626862, Gyeongsangnam D, South Korea
[3] Korea Inst Nucl Safety, Dept Reactor Syst Evaluat, 62 Gwahak Ro, Daejeon 305338, South Korea
来源：
ANNALS OF NUCLEAR ENERGY | 2016年 / 92卷
基金：
新加坡国家研究基金会;
关键词：
Spent fuel bundle; Computational Fluid Dynamics; Natural convection analysis; Critical Heat Flux (CHF); Departure from the nucleate boiling ratio (DNBR);
D O I：
10.1016/j.anucene.2016.01.033
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：
We investigated the thermal-hydraulic safety of spent fuel bundles installed in a mast assembly, assuming a lock-up accident of a fuel transfer system. For this, flow analysis with Computational Fluid Dynamics (CFD) for the natural convection and subsequent safety evaluation with 1-D Nuclear Power Plant (NPP) safety analysis code were carried out. Prior to the natural convection analysis for the mast assembly using CFD code, we performed benchmark calculations against two experimental data sets obtained by Betts and Bokhari (2000) and PNL (Pacific Northwest Laboratory, 1980). This was done to select the proper physical models for a natural convection flow analysis and to ensure the reliability of prediction of natural convection flow in the fuel bundle geometry. Finally, we performed a main natural convection analysis for the fuel assembly inside the mast assembly. From this calculation, we observed a stable natural circulation flow between the mast assembly and pool side, and obtained coolant velocity at the inlet of the spent fuel bundle. This flow condition is given as a boundary condition for the 1-D NPP safety analysis code, which is used to predict the Critical Heat Flux and then departure from the nucleate boiling ratio. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：136 / 149
页数：14
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