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1.北京建筑大学环境与能源工程学院 北京市建筑能源高效综合利用工程技术研究中心 北京 100044
2.上海理工大学能源与动力工程学院 上海 200093
吴海峰,男,博士,副教授,北京建筑大学环境与能源工程学院,18810906815,E-mail:wuhaifeng@bucea.edu.cn。研究方向:雾化技术、制冷和光伏建筑一体化等。
收稿日期:2023-12-26,
修回日期:2024-02-12,
录用日期:2024-04-02,
纸质出版日期:2025-06-16
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郝亚辉, 吴海峰, 徐荣吉, 等. 室外造雪机用核子器两相流动过程与雾化规律研究[J]. 制冷学报, 2025,46(3):98-103.
Hao Yahui, Wu Haifeng, Xu Rongji, et al. Two-Phase Flow Process and Atomization Law of Nucleator Nozzle for an Outdoor Snow Maker[J]. Journal of refrigeration, 2025, 46(3): 98-103.
郝亚辉, 吴海峰, 徐荣吉, 等. 室外造雪机用核子器两相流动过程与雾化规律研究[J]. 制冷学报, 2025,46(3):98-103. DOI: 10.12465/j.issn.0253-4339.2025.03.098.
Hao Yahui, Wu Haifeng, Xu Rongji, et al. Two-Phase Flow Process and Atomization Law of Nucleator Nozzle for an Outdoor Snow Maker[J]. Journal of refrigeration, 2025, 46(3): 98-103. DOI: 10.12465/j.issn.0253-4339.2025.03.098.
核子器对促进人工造雪的液滴快速成核、结晶、成雪过程具有重要作用。针对室外造雪机用的通用核子器,设计了可视化实验平台,研究了核子器内部气液两相流动过程以及对雾化行为的影响规律。结果表明:核子器内部呈两相环形流动,外部形成了连续的空锥形喷雾场。随着气液压力比(
Φ
GL
)的增加,界面扰动波在内部气液两相流动过程中逐渐消失。随着空气核占据更多的空间,液膜厚度逐渐减小且变得均匀稳定,雾化效率和雾化质量均得到显著提升。当
Φ
GL
从20%增至67%时,液滴分布的均匀性和稳定性分别提高了17%和60%。
Nucleator nozzles play an important role in promoting the rapid nucleation
crystallization
and snow formation of artificial snow droplets. A visual experimental platform was designed to investigate the gas-liquid two-phase flow process inside the nucleator nozzle and its influence on atomization behavior. The results showed the presence of a two-phase annular flow within the nucleator nozzle and a continuous hollow-cone spray field outside the nucleator nozzle. As the gas-liquid pressure ratio (
Φ
GL
) increases
the i
nterfacial disturbance waves at the gas-liquid interface of the internal flow gradually disappear. As the air core occupied more space
the liquid film thickness gradually decreased and became uniform and stable. This markedly improved the atomization efficiency and quality. When the
Φ
GL
was increased from 20% to 67%
the uniformity and stability of droplet distribution increased by 17% and 60%
respectively. This research offers important guidance for the structural design of high-performance atomized components.
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