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核技术  2014 

开式自然循环系统启动特性实验研究

DOI: 10.11889/j.0253-3219.2014.hjs.37.040602, PP. 40602-40602

Keywords: 开式自然循环,启动过程,闪蒸,沸腾喷发,密度波不稳定性

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Abstract:

对开式自然循环系统的启动过程进行了实验研究,并详细分析了不同加热功率和不同入口过冷度条件下系统出现的实验现象和流动特性,最后给出了自然循环系统在启动过程中的流动不稳定性边界图。结果如下:在低加热功率下,随着入口过冷度的减小系统会依次经历单相稳定、两相振荡和两相稳定流动;增大加热功率会使系统的两相流动不稳定范围增大,甚至很难形成稳定的两相流动。在两相振荡阶段,系统会出现由闪蒸诱发的不稳定流动以及由沸腾喷发和闪蒸共同诱发的不稳定流动两种模式,这两种不同模式的流动不稳定性均属于密度波不稳定性。

References

[1]  Chiang J H, Aritomi M, Mori M. Fundamental studies on thermo-hydraulics during start-up in natural circulation boiling water reactors (natural circulation oscillation induced by hydrostatic head fluctuation)[J]. J. Nucl, Sci. Technlo, 1993, 30 (3): 203-211.
[2]  M Furuya, F Inada, T H J J van der Hagen. Flashing-induced density wave oscillation in a natural circulation BWR-mechanism of instability and stability map[J]. Nuclear Engineering and Design, 2005, 235: 1557-1569.
[3]  Boure J A, Bergles J E, Tong L S. Review of two-phase flow instability[J]. Nucl. Eng. Des., 1973, 25: 165-192.
[4]  姚伟. 沸腾两相自然循环系统稳定性的实验与理论研究[D].上海: 上海交通大学, 2000.
[5]  Yao wei. Experimental and theoretical research on the instability mechanism of boiling two-phase natural circulation system[D]. Shanghai. Shanghai Jiao Tong University, 2000.
[6]  C S Byun, D W Jerng, N E Todreas, M J Driscoll. Conceptural design and analysis of a semi-passive containment cooling system for a large concrete containment[J].Nuclear Engineering and Design, 2000, 199: 227-242.
[7]  Ick Soo Kyung, Sang Yong Lee. Periodic flow excursion in an open two-phase natural circulation loop[J]. Nuclear Engineering and Design,1996,162: 233-244.
[8]  Aritomi M, Chiang J H, et al. Fundamental studies on safety-related thermo-hydraulics of natural circulation boiling parallel channel flow systems under start-up conditions (mechanism of geysering in parallel channels)[J]. Accident Anal. Nucl. Safety, 1992, 33 (2): 170-182.

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