Research on the Key Influencing Factors of the Backflow Phenomenon on the Primary Side of the Inverted U-tube Steam Generator under Natural Circulation

被引：0

作者：

Wang T. ^{[1
]}

Wang Y. ^{[1
]}

Zhao P. ^{[1
,2
]}

Wang X. ^{[1
]}

Ling Y. ^{[1
]}

Wang Y. ^{[1
]}

Zhu E. ^{[1
]}

机构：

[1] School of Nuclear Science and Technology, University of South China, Hengyang

[2] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu

来源：

Hedongli Gongcheng/Nuclear Power Engineering | 2022年 / 43卷 / 02期

关键词：

Backflow; Computational fluid dynamics; Key influencing factors; Natural circulation; UTSG;

D O I：

10.13832/j.jnpe.2022.02.0040

中图分类号：

学科分类号：

摘要：

Backflow exists in the inverted U-tube steam generator (UTSG) under the condition of natural circulation, which affects the heat carrying capacity and natural circulation capacity of the primary circuit coolant system. Referring to the design parameters of UTSG in PWR thermal experimental device (PWR PACTEL) in Finland, this paper uses computational fluid dynamics (CFD) software Fluent to simulate the backflow in UTSG under the condition of uniform flow decline, and studies the influence of primary side operation parameters, UTSG design parameters and secondary side operation parameters on the backflow. The results show that increasing the primary side temperature, primary side operating pressure and thermal conductivity of the inverted U-tube will increase the critical mass flow rate of the UTSG, making the UTSG more prone to backflow; Increasing the water supply and temperature on the secondary side of UTSG and the roughness of the inner wall of inverted U-tube will decrease the critical mass flow rate of UTSG and restrain the occurrence of backflow. Changing the wall thickness of inverted U-tube has little effect on the backflow; Compared with changing the temperature of the secondary circuit, changing the temperature of the primary circuit has a more significant impact on the backflow. The results of this study can provide some reference for the parameter optimization of UTSG. Copyright ©2022 Nuclear Power Engineering. All rights reserved.

引用

页码：40 / 46

页数：6

共 13 条

[1] 41, 1, (2007)
[2] KUKITA Y, NAKAMURA H, TASAKA K, Et al., Nonuniform steam generator U-tube flow distribution during natural circulation tests in ROSA-IV large scale test facility, Nuclear Science and Engineering, 99, 4, pp. 289-298, (1988)
[3] DE SANTI G F, MAYINGER F., Steam condensation and liquid holdup in steam generator U-tubes during oscillatory natural circulation, Experimental Heat Transfer, 6, 4, pp. 367-387, (1993)
[4] SANDERS J., Stability of single-phase natural circulation with inverted U-tube steam generators, Journal of Heat Transfer, 110, 3, pp. 735-742, (1988)
[5] 42, 1
[6] 46, (2012)
[7] (2018)
[8] 40, 2, (2019)
[9] 42, 1
[10] KAUPPINEN O P, RIIKONEN V, KOUHIA V, Et al., Analysis of reverse flow in low-rise inverted U-tube steam generator of PWR PACTEL facility, Proceedings of International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, pp. 5044-5057, (2015)

← 1 2 →