Comparative Analysis of Critical Velocities of Inter-tube Oscillation and Reverse Flow in Inverted U-tube Steam Generator under Single-phase Conditions

Zhang Rui; Ma Zaiyong; Jiang Zhipeng; Zhang Luteng; Tang Yu; Yue Nina; Sun Wan; Pan Liangming; Zhou Wenxiong

doi:10.13832/j.jnpe.2021.05.0036

Volume 42 Issue 5

Sep. 2021

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Zhang Rui, Ma Zaiyong, Jiang Zhipeng, Zhang Luteng, Tang Yu, Yue Nina, Sun Wan, Pan Liangming, Zhou Wenxiong. Comparative Analysis of Critical Velocities of Inter-tube Oscillation and Reverse Flow in Inverted U-tube Steam Generator under Single-phase Conditions[J]. Nuclear Power Engineering, 2021, 42(5): 36-41. doi: 10.13832/j.jnpe.2021.05.0036

Citation:

Zhang Rui, Ma Zaiyong, Jiang Zhipeng, Zhang Luteng, Tang Yu, Yue Nina, Sun Wan, Pan Liangming, Zhou Wenxiong. Comparative Analysis of Critical Velocities of Inter-tube Oscillation and Reverse Flow in Inverted U-tube Steam Generator under Single-phase Conditions[J]. Nuclear Power Engineering, 2021, 42(5): 36-41. doi: 10.13832/j.jnpe.2021.05.0036

Citation:

Zhang Rui, Ma Zaiyong, Jiang Zhipeng, Zhang Luteng, Tang Yu, Yue Nina, Sun Wan, Pan Liangming, Zhou Wenxiong. Comparative Analysis of Critical Velocities of Inter-tube Oscillation and Reverse Flow in Inverted U-tube Steam Generator under Single-phase Conditions[J]. Nuclear Power Engineering, 2021, 42(5): 36-41. doi: 10.13832/j.jnpe.2021.05.0036

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Comparative Analysis of Critical Velocities of Inter-tube Oscillation and Reverse Flow in Inverted U-tube Steam Generator under Single-phase Conditions

doi: 10.13832/j.jnpe.2021.05.0036

1.
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China
2.
CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2020-09-03
Rev Recd Date: 2020-09-22
Publish Date: 2021-09-30

Abstract

Abstract

In order to improve the safety and cost-effectiveness of nuclear reactor system, the authors study experimentally the relationship between the inter-tube oscillation criticality and reverse criticality in inverted U-shaped tube under single phase condition. By processing the experimental data, the authors then obtain and compare the critical velocities of inter-tube oscillation and reverse flow under different conditions. The results show that under the experimental conditions, the critical velocity of inter-tube oscillation is always higher than that of reverse flow, and the ratio of the former to latter one reaches up to 1.46. It increases with the rise of the inlet temperature of the primary side and the fall of the loop resistance, as well as with the increase of the cooling water flow on the secondary side, but at a gradually decreasing rate. Also, the results indicate that the loop resistance can significantly limit the oscillation, and that a serious inter-tube oscillation may occur at a low loop resistance.
- Inverted U-tube steam generator,
- Single-phase,
- Inter-tube oscillation,
- Critical velocity

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References(12)

References

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