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计，用于测量He II-蒸气体系中蒸发流的蒸气流速。 1．超导热线风速计的开发： 由于采用了超导材料 Sn + Au 薄膜，该特定模型被发现比法国开发的模型具有更宽的温度范围，特别是在较低的温度范围内。2．标定流装置的研制是以氦饱和蒸气为工作流体的风洞。校准的要点是分离温度和速度对输出信号的影响。这可以通过使用计算机软件在同时测量温度和速度的基础上来完成。3．超导热线风速计在He II蒸发测量中的应用4．评估

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)。