Study on Direct Contact Heat Transfer from Water Droplets Dispersed in a Molten Metal Pool

金属熔池中分散水滴的直接接触传热研究

• 批准号: 17560751
• 负责人: MISHIMA Kaichiro
• 金额: $ 2.27万
• 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: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17560751/
• 关键词: neutron radiography; boiling heat transfer; liquid-liquid interface; liquid metal; fast breeder reactor; direct contact heat transfer; multiphase flow; visulalization; 液体金属流れ; 鉛ビスマス; 熱交換器; 自然循環; 液滴蒸発; 沸騰熱伝達

Direct contact evaporation of a water droplet was studied in a molten-metal pool. Dynamic behavior of a two-phase bubble evaporating in molten alloy was clearly observed by using high-frame rate neutron radiography. Measurements of drag coefficient of a single two-phase bubble showed Mat the relationship between the rising velocity of a single two-phase bubble in the molten Newton's alloy was not much different from that for an ordinary one. The growth rate of a two-phase bubble was measured to determine the interfacial beat transfer coefficient in a molten alloy-water system. An empirical equation of overall heat transfer coefficient was presented for practical application.

研究了金属熔池中水滴的直接接触蒸发。利用高帧频中子照相技术，清晰地观察到了合金熔体中两相气泡蒸发的动态行为。对单个两相气泡阻力系数的测量表明，单个两相气泡在熔融牛顿合金中的上升速度与普通两相气泡的上升速度之间的关系没有太大的差别。通过测量两相气泡的生长速率来确定合金-水体系界面热传递系数。提出了一个综合传热系数的经验公式，以供实际应用。

项目成果

Direct contact Evaporation of a Water Droplet in a Molten-Metal Pool

熔融金属池中水滴的直接接触蒸发

• 发表时间: 2007
• 作者: T.Hazuku;T.Takamasa;T.Hibiki;M.Ishii;Y. Saito
• 通讯作者: Y. Saito

「研究成果報告書概要(和文)」より

摘自《研究结果报告摘要（日文）》

• 发表时间: 2005
• 作者: Kawauchi;et. al.;Nishimura et al.;Dezawa et al.;Yoshizawa et al.;星野 幹雄;星野 幹雄
• 通讯作者: 星野 幹雄