Development of Superconductive Hot Wire Anemometer

超导热线风速计的研制

• 批准号: 09555299
• 负责人: MURAKAMI Masahide
• 金额: $ 7.68万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555299/
• 关键词: Superconductivity; Hot Wire Anemometer; Superfluid; Evaporation and Condensation; 蒸発・凝縮現象; ホットワイア流速計; 蒸発現象; 超流動ヘリウム; 低温ヘリウムガス風洞; 熱衝撃波

In this study, the superconductive hot wire anemometer, which can be used for the flow measurement at extremely high Reynolds number was developed, And it was used to measure the vapor flow velocity of the evaporated flow in He II - vapor system.1. Development of the superconductive hot wire anemometer : This particular model was found to have a'wider temperature range than those developed in France in particular in the lower temperature range, because of the superconductive material, Sn + Au thin film.2. Development of Calibration Flow Facility It is a kind of wind tunnel using helium saturated vapor as the working fluid. Point of the calibration is the separation of the effects of the temperature and the velocity on the output signal. This can be done by using computer soft on the basis of the simultaneous measurements of the temperature and the velocity.3. Application of the superconductive hot wire anemometer to the measurement of He II evaporation4. Evaluation

本研究研制了一种可用于极高雷诺数流量测量的超导热线风速仪，并将其用于测量He II -蒸汽系统中蒸发流的蒸汽流速。超导热线风速计的发展：由于超导材料Sn + Au薄膜，这种特殊的模型被发现具有比法国开发的更宽的温度范围，特别是在更低的温度范围内。它是以饱和氦蒸汽为工作流体的一种风洞。校准的重点是分离温度和速度对输出信号的影响。这可以在同时测量温度和速度的基础上，用计算机软件来完成。超导热线风速计在He II蒸发量测量中的应用评价

项目成果

T.Furukawa and M.Murakami: "Transient evaporation phenomena induced Rarefied Gas Dynamics by impingement of second sound on a superfluid helium-vapor interface" (to be published). (1999)

T.Furukawa 和 M.Murakami：“瞬态蒸发现象通过第二声波撞击超流氦-蒸气界面诱发稀薄气体动力学”（即将出版）。

T.Furukawa and M.Murakami: "Translent evaporation phenomena induced by impingement of second sound on a superfluid helim-vapor interface" Rarefied Gas Dynamics. (発表予定). (1999)

T.Furukawa 和 M.Murakami：“第二声撞击超流体氦气-蒸气界面引起的瞬时蒸发现象”Rarefied Gas Dynamics（即将发表）。

T.Furukawa and M.Murakami: "Transient evaporation phenomena juduced by impingement of second sound on a superfluid helium-vapor interface" Rarefied Gas Dynamics. (予定). (1999)

T.Furukawa 和 M.Murakami：“超流氦-蒸气界面上的第二声波撞击所引起的瞬态蒸发现象”Rarefied Gas Dynamics（计划）。

T.Furukawa, M.Murakami, H.Nagai and T.Iida: "Transient evaporation phenomena in pure vapor-liquid system" Proceedings of 5th International Heat Pipe symposium. 255-260 (1997)

T.Furukawa、M.Murakami、H.Nagai 和 T.Iida：“纯汽液系统中的瞬态蒸发现象”第五届国际热管研讨会论文集。

古川徹,村上正秀: "HeII自由界面からの蒸発におけるKnudsen効果" 流力講演会論文集. 5-8 (1998)

Toru Furukawa、Masahide Murakami：“Knudsen 对 HeII 自由界面蒸发的影响”流体动力学会议记录 5-8 (1998)。