Development of a superfluid shock tube facility

超流体激波管设施的开发

• 批准号: 06555290
• 负责人: MURAKAMI Masahide
• 金额: $ 9.02万
• 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 (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555290/
• 关键词: Superfluid helium; Shock tube; Shock wave; Thermal shock wave; Free surface; 第2音波; λ-転移; 蒸発; 入-転移

The objectives of this research are the development of the superfluid shock tube facility which is a multi-purpose general experimental facility for shock wave and thermo-fluid dynamic phenomena in superfluid helium. In addition, several relating experimental studies have been also conducted by using the facility.(1) The design and manufacturing of the facility and shock performance test have been completed. The test with superfluid helium in the low pressure section of the shock tube demonstrated that the shock performance is quite satisfactory for a wide variety of scientific and engineering experiments.(2) Study of second sound thermal shock waves by visualization method of laser holography interferometer and by using superconductive temperature sensors : The propagation and the pulse form deformation due to the breakdown of superfluidity are investigated to yield valuable information on the development of high density quantized vortex on a heater and behind a thermal shock and high … More ly transient heat transfer in He II.(3) Study of evaporation phenomena induced by the direct incidence of a thermal pulse on a free surface of He II both experimentally and by numerical computation : A propagating evaporated vapor wave is clearly visualized in the form of an interferogram. The reflection law of a second sound thermal shock wave from a free surface is experimentally obtained and affirmatively compared with Khalatnikov's theory. An attempt to modify the conventional laser holography interferometer to a two-beam laser holography interferometer was made for a higher resolution of interferograms.(4) Numerical simulation of superfluid thermo-fluid dynamic phenomena on the basis of the two-fluid equation system supplemented with the equation of vortex line density development proposed by Vinen : The initial value of the vortex line density and the source term of the VInen equation are investigated by comparing the result with experimental ones. A scheme for two-dimensional analysis is successfully developed and applied to a problem of a thermal shock wave reflection on a two-dimensional wedge.(5) The validity of the facility is discussed to conclude that the facility can be used for the various experiments anticipated. Some modification are also suggested for the higher performance and easy operation. Less

本研究的目标是开发超流激波管装置，这是一种用于超流氦中激波和热流体动力学现象的多用途通用实验装置。此外，还利用该装置进行了一些相关的实验研究。 (1)该装置的设计、制造和冲击性能试验已完成，激波管低压段的超流氦试验表明，其冲击性能满足多种科学和工程要求。 (2)研究通过激光全息干涉仪的可视化方法和使用超导温度传感器来研究第二声热冲击波：研究了超流破坏导致的传播和脉冲形式变形，以提供有关加热器上高密度量子化涡流发展的有价值的信息(3) 通过实验和数值研究热脉冲直接入射到 He II 自由表面引起的蒸发现象计算：传播的蒸发蒸汽波以干涉图的形式清晰可见，通过实验获得了自由表面的第二声热冲击波的反射定律，并与哈拉特尼科夫的理论进行了肯定的比较。这是对传统激光全息干涉仪的尝试。为了获得更高的干涉图分辨率，研制了两束激光全息干涉仪。(4)基于超流热-流体动力学现象的数值模拟补充了 Vinen 提出的涡线密度展开方程的二流体方程组：通过与实验结果比较，研究了涡线密度的初始值和 VInen 方程的源项。二维格式。分析已成功开发并应用于二维楔上的热冲击波反射问题。(5)讨论了该装置的有效性，得出结论该装置可用于预期的各种实验。建议更高的性能和简单的操作。较少的

项目成果

M.Murakami, T.Iida and T.Shimazaki: "A study of thermal shock wave propagation in superfluid helium." Shock Waves, (Springer-Verlag). 63-68 (1995)

M.Murakami、T.Iida 和 T.Shimazaki：“超流氦中热冲击波传播的研究”。

永井大樹: "超流動衝撃波管に関する動作特性" 平成7年衝撃波シンポジウム 講演論文集. (発表予定). (1996)

Daiki Nagai：“超流体激波管的运行特性”1995 年冲击波研讨会论文集（计划演讲）（1996 年）。

T.Shimazaki, M.Murakami and T.Iida: "Temperature measurement in transient heat transport phenomena through a thermal boundary layr with high vortex density in He II." Adv.Cryo.Engineering. 41A. 265-271 (1996)

T.Shimazaki、M.Murakami 和 T.Iida：“通过 He II 中高涡密度热边界层进行瞬态热传输现象的温度测量。”

古川徹: "位相変調レーザーホログラフィー干渉計の極低温流体現象への応用" 平成7年衝撃波シンポジウム 講演論文集. (発表予定). (1996)

Toru Furukawa：“相位调制激光全息干涉仪在低温流体现象中的应用”1995 年冲击波研讨会论文集（待发表）。

古川徹: "位相変調レーザーホログラフィー干渉計の極低温現象への応用" 平成7年度衝撃波シンポジウム講演集. 507-510 (1996)

Toru Furukawa：“相位调制激光全息干涉仪在低温现象中的应用”1995 年冲击波研讨会论文集 507-510 (1996)。