Experimental Study of Bottom Reflooding in a Narrow Rectangular Channel

Deng Yonghao; Xu Wei; Liu Xiaojing; Guo Jiuyuan; Wu Dan

doi:10.13832/j.jnpe.2021.06.0017

Volume 42 Issue 6

Dec. 2021

Turn off MathJax

Article Contents

Article Navigation > Nuclear Power Engineering > 2021 > 42(6): 17-23

Deng Yonghao, Xu Wei, Liu Xiaojing, Guo Jiuyuan, Wu Dan. Experimental Study of Bottom Reflooding in a Narrow Rectangular Channel[J]. Nuclear Power Engineering, 2021, 42(6): 17-23. doi: 10.13832/j.jnpe.2021.06.0017

Citation:

Deng Yonghao, Xu Wei, Liu Xiaojing, Guo Jiuyuan, Wu Dan. Experimental Study of Bottom Reflooding in a Narrow Rectangular Channel[J]. Nuclear Power Engineering, 2021, 42(6): 17-23. doi: 10.13832/j.jnpe.2021.06.0017

Citation:

PDF( 5136 KB)

Experimental Study of Bottom Reflooding in a Narrow Rectangular Channel

doi: 10.13832/j.jnpe.2021.06.0017

1.
School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
2.
Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2020-11-16
Rev Recd Date: 2021-05-25
Publish Date: 2021-12-09

Abstract

Abstract

In order to investigate thermal hydraulic characteristics during bottom reflooding when LOCA occurs in a narrow rectangular channel, the reflooding experiments were carried out under different conditions. The narrow rectangular channel was made by welding two Inconel alloy plates. This study analyzes the bottom reflooding process according to the temperature variation curve, calculates and compares the advancing speed of the quench front (quench speed) under different experimental conditions, and studies the influence of experimental parameters on the reflooding process. Experimental results indicated that quench velocity under bottom reflooding is increasing with increased system pressure, increased inlet velocity, reduced initial wall surface temperature and increase in the degree of subcooling of the coolant. A comparative analysis of the bottom and combined reflooding case indicates that quench velocity under bottom reflooding is higher than that during combined reflooding with the same flow rate. This study lays the foundation for the research of accident prevention and mitigation of plate fuel element reactors.
- Narrow rectangular channel,
- LOCA,
- Reflooding,
- Quench speed

FullText(HTML)

References(12)

References

[1]	KIMBALL K D, ROY R P. Quench front propagation during bottom reflooding of a heated annular channel[J]. Nuclear Engineering & Design, 1983, 76(1): 79-88.
[2]	MURAO, YOSHIO. Analytical study of thermo-hydrodynamic behavior of reflood-phase during LOCA[J]. Journal of Nuclear Science & Technology, 2008, 16(11): 802-817.
[3]	BARNEA Y, ELIAS E, SHAI I. Flow and heat transfer regimes during quenching of hot surfaces[J]. International Journal of Heat and Mass Transfer, 1994, 37(10): 1441-1453. doi: 10.1016/0017-9310(94)90146-5
[4]	CELATA G P, CUMO M, D’ANNIBALE F, et al. Rewetting velocity in quenching at reduced gravity[J]. International Journal of Thermal Sciences, 2010, 49(9): 1567-1575. doi: 10.1016/j.ijthermalsci.2010.04.012
[5]	TAKROURI K, LUXAT J, HAMED M. Experimental investigation of quench and re-wetting temperatures of hot horizontal tubes well above the limiting temperature for solid–liquid contact[J]. Nuclear Engineering & Design, 2017, 311(1): 167-183.
[6]	XU W, DENG Y, LIU X, et al. Mechanism research of two-phase flow regimes during bottom reflooding in narrow rectangular channel[J]. Annals of Nuclear Energy, 2021, 151(3): 107977.
[7]	XU W, XIA J, LIU X, et al. Experimental investigation of bottom reflooding and modeling of quench velocity in a narrow rectangular channel[J]. Progress in Nuclear Energy, 2018, 105(5): 21-28.
[8]	吕崇德. 热工参数测量与处理[M]. 北京: 清华大学出版社, 1990.
[9]	HOLOWACH M J, HOCHREITER L E, MAHAFFY J H, et al. Modeling of droplet entrainment phenomena at a quench front[J]. International Journal of Heat & Fluid Flow, 2003, 24(6): 902-918.
[10]	YUAN D W, YAN X, XIONG W Y, et al. Bubble behavior of high subcooling flow boiling at different system pressure in vertical narrow channel[J]. Applied Thermal Engineering, 2011, 31(16): 3512-3520. doi: 10.1016/j.applthermaleng.2011.07.004
[11]	CARBAJO J J. Parametric study on rewetting velocities obtained with a two-dimensional heat conduction code[J]. Nuclear Engineering and Design, 1986, 92(1): 69-87. doi: 10.1016/0029-5493(86)90100-7
[12]	王金宇,王均,昝元峰,等. 环形通道内再淹没过程骤冷前沿推进速度实验研究[J]. 核动力工程,2018, 39(4): 63-66.