Study on Critical Heat Flux Mechanism of Subcooled Water Flow Boiling

过冷水流沸腾临界热流机理研究

• 批准号: 22560196
• 负责人: HATA Koichi
• 金额: $ 2.91万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560196/
• 关键词: 沸騰限界熱流束; 強制対流; 限界熱流束; 円管; サブクール水; 限界熱流束発生機構; 流量急減; 限界熱流束表示式; 乱流熱伝達; 核沸騰熱伝達; スワール流れ; 捻りテープ; テープツイスト比; SUS304円管発熱体; CHF表示式

The steady-state critical heat fluxes (CHFs) in a short SUS304-tube with twisted-tape insert are systematically measured. The SUS304 test tube of inner diameter=6 mm, heated length=59.5 mm, effective length=49.1 mm is used in this work. The SUS304 twisted tapes withtwist ratio=pitch of 180°rotation)/d=2.39, 3.39 and 4.45 are used. The influences of the twisted-tape insert and the swirl velocity on the CHFs are investigated into details and the widely and precisely predictable correlations of the CHFs in the SUS304-tube with twisted-tape insert are given. The correlations can describe the CHFs obtained in this work within -25 to +15 % difference.

本文系统地测量了带扭带的SUS 304短管内稳态临界热流密度。本工作采用内径为6 mm、加热长度为59.5mm、有效长度为49.1mm的SUS 304试管。所用扭率为180°螺距/d=2.39、3.39和4.45的SUS 304扭带。详细研究了扭带插入物和旋流速度对CHF的影响，给出了具有扭带插入物的SUS 304管内CHF的广泛而精确的预测关联式。相关性可以在-25至+15%的差异内描述在这项工作中获得的CHF。

项目成果

Transient Critical Heat Fluxes of Subcooled Water Flow Boiling in a SUS304-Circular Tube with Various Twisted-Tape Inserts (Influence of Twist Ratio)

不同扭带嵌件的SUS304圆管内过冷水流沸腾的瞬态临界热通量（扭绞比的影响）

• 发表时间: 2013
• 期刊: Proceedings of the 21st International Conference on Nuclear Engineering
• 作者: K. Hata;Y. Shirai and S. Masuzaki
• 通讯作者: Y. Shirai and S. Masuzaki

Computational Study of Twisted-Tape-Induced Swirl Flow Heat Transfer and Pressure Drop in a Vertical Circular Tube under Velocities Controlled

速度控制下垂直圆管内扭带引起旋流传热和压降的计算研究

• 发表时间: 2012
• 作者: K. Hata;Y. Shirai;S. Masuzaki and A. Hamura
• 通讯作者: S. Masuzaki and A. Hamura

Heat transfer and critical heat flux of subcooled water flow boiling in a HORIZONTAL circular tube

• DOI: 10.1016/j.expthermflusci.2012.10.001
• 发表时间: 2013
• 期刊: Experimental Thermal and Fluid Science
• 影响因子: 3.2
• 作者: K. Hata;Y. Shirai;S. Masuzaki

Computational Study of Turbulent Heat Transfer for Heating of Water in a Vertical Circular Tube

垂直圆管内水加热的湍流传热计算研究

• DOI: 10.1299/jpes.6.446
• 发表时间: 2012
• 期刊: Journal of Power and Energy Systems
• 作者: K. Hata;Y. Shirai;S. Masuzaki and A. Hamura
• 通讯作者: S. Masuzaki and A. Hamura

垂直円管内水の乱流熱伝達の数値解析 (その5.伝導底層に及ぼす入口液温の影響)

垂直圆管内水中湍流传热的数值分析（第5部分：入口液体温度对传导底层的影响）

• 发表时间: 2013
• 作者: 畑 幸一;白井康之;増崎 貴;羽邑光道
• 通讯作者: 羽邑光道