Distortion Evaluation of Natural Circulation Characteristic Curves Based on Scaled-down Methodology

Cheng Cheng; Lu Donghua; Su Qianhua; Zhang Ge

doi:10.13832/j.jnpe.2023.06.0119

Volume 44 Issue 6

Dec. 2023

Turn off MathJax

Article Contents

Article Navigation > Nuclear Power Engineering > 2023 > 44(6): 119-126

Cheng Cheng, Lu Donghua, Su Qianhua, Zhang Ge. Distortion Evaluation of Natural Circulation Characteristic Curves Based on Scaled-down Methodology[J]. Nuclear Power Engineering, 2023, 44(6): 119-126. doi: 10.13832/j.jnpe.2023.06.0119

Citation:

Cheng Cheng, Lu Donghua, Su Qianhua, Zhang Ge. Distortion Evaluation of Natural Circulation Characteristic Curves Based on Scaled-down Methodology[J]. Nuclear Power Engineering, 2023, 44(6): 119-126. doi: 10.13832/j.jnpe.2023.06.0119

Citation:

PDF( 6294 KB)

Distortion Evaluation of Natural Circulation Characteristic Curves Based on Scaled-down Methodology

doi: 10.13832/j.jnpe.2023.06.0119

Cheng Cheng^{1, 2
,},
Lu Donghua^{1
,
,},
Su Qianhua¹,
Zhang Ge¹

1.
Guangdong Provincial Key Laboratory of Nuclear Power Safety, China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen, Guangdong, 518000, China
2.
School of Energy and Environment, Southeast University, Nanjing, 210096, China

Received Date: 2022-11-18
Rev Recd Date: 2023-03-03

Available Online: 2023-12-11

Publish Date: 2023-12-15

Abstract

Abstract

Based on H2TS (Hierarchical, Two-Tiered Scaling) scaled-down method, three groups of experimental facilities, namely prototype, 1/2 model and 1/4 model, were designed and built. Natural circulation experiments on different heating power were carried out. The distortion of natural circulation characteristic curves in the drop-height scaled-down method was analyzed. The experimental results show that the parameters representing the main characteristics of natural circulation, such as natural circulation flow rate, Reynolds number, Grazoff number and modified Grazoff number, can keep the characteristic curves of natural circulation flow rate-heating power, Reynolds number-Grazoff number and Reynolds number-modified Grazoff number from being seriously distorted after being scaled down, and the fitting curves between the prototype and the model can form a one-to-one mapping. The characteristic curves of natural circulation can accurately reproduce the prototype law in the process of drop-height scaling. The reliability of drop-height scaling experiment simulating the natural circulation characteristic curves in the prototype is effectively verified.
- Natural circulation,
- Characteristic curves,
- Scaling simulation,
- H2TS,
- Distortion evaluation

FullText(HTML)

References(13)

References

[1]	程诚,文青龙,卢冬华,等. 非能动安全壳冷却系统瞬态特性试验研究[J]. 核动力工程,2017, 38(1): 6-9. doi: 10.13832/j.jnpe.2017.01.0006
[2]	陶俊,程诚,谢小飞,等. 采用分离式热管的非能动安全壳冷却系统研究[J]. 原子能科学技术,2018, 52(8): 1423-1430.
[3]	WANG S P, LIN Y C, WANG G Y, et al. Experimental investigation on flashing-induced flow instability in a natural circulation scaled-down test facility[J]. Annals of Nuclear Energy, 2022, 171: 109023. doi: 10.1016/j.anucene.2022.109023
[4]	LIU L M, PETERSON P, ZHANG D L, et al. Scaling and distortion analysis using a simple natural circulation loop for FHR development[J]. Applied Thermal Engineering, 2020, 168: 114849. doi: 10.1016/j.applthermaleng.2019.114849
[5]	ZUBER N, ROHATGI U S, WULFF W, et al. Application of fractional scaling analysis (FSA) to loss of coolant accidents (LOCA): methodology development[J]. Nuclear Engineering and Design, 2007, 237(15-17): 1593-1607. doi: 10.1016/j.nucengdes.2007.01.017
[6]	ISHII M, KATAOKA I. Scaling laws for thermal-hydraulic system under single phase and two-phase natural circulation[J]. Nuclear Engineering and Design, 1984, 81(3): 411-425. doi: 10.1016/0029-5493(84)90287-5
[7]	KIM H, PARK J P, JANG D, et al. Development of phenomena identification and ranking tables (PIRTs) to implement research reactor-specific capability in SPACE code[J]. Annals of Nuclear Energy, 2020, 138: 107206. doi: 10.1016/j.anucene.2019.107206
[8]	LI X B, LI H Y, LIU Y S, et al. Numerical scaling assessment on natural circulation in Core Makeup Tank[J]. Annals of Nuclear Energy, 2020, 140: 107105. doi: 10.1016/j.anucene.2019.107105
[9]	曾未,王杰,黄涛,等. 压水堆大破口失水事故重要现象识别及数值计算不确定性量化分析研究[J]. 核动力工程,2021, 42(1): 198-203. doi: 10.13832/j.jnpe.2021.01.0198
[10]	LU D H, XIAO Z J, CHEN B D. A new method to derive one set of scaling criteria for reactor natural circulation at single and two-phase conditions[J]. Nuclear Engineering and Design, 2010, 240(11): 3851-3861. doi: 10.1016/j.nucengdes.2010.08.012
[11]	卢冬华,肖泽军,陈炳德,等. 压水堆自然循环比例模化基本方程及相似准则数的研究[J]. 核动力工程,2009, 30(3): 72-84,94.
[12]	VIJAYAN P K, MEHTA S K, DATE A W. On the steady-state performance of natural circulation loops[J]. International Journal of Heat and Mass Transfer, 1991, 34(9): 2219-2230. doi: 10.1016/0017-9310(91)90048-J
[13]	VIJAYAN P K. Experimental observations on the general trends of the steady state and stability behaviour of single-phase natural circulation loops[J]. Nuclear Engineering and Design, 2002, 215(1-2): 139-152. doi: 10.1016/S0029-5493(02)00047-X