2013 Fiscal Year Final Research Report
Visualization of quantum vortex in super fluid and study of universality in turbulence based on pressure measurement
| Project/Area Number |
23360082
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
TSUJI Yoshiyuki 名古屋大学, 工学(系)研究科(研究院), 教授 (00252255)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 流体工学 / 量子乱流 / 圧力変動 / 普遍法則 |
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| Research Abstract |
When the liquid helium has its temperature below 2.17K, it becomes a super fluid with no viscosity. Under this condition, we can expect high Reynolds number property in fluid turbulence. In this study, we successfully developed the visualization technique of super fluid and can observe the quantum vortex motions. Also, the small pressure probe is developed to measure accurate pressure fluctuations. This technique is applied to the near-wall region of turbulent boundary layer. Using the invariant assumption of probability density functions, we suggest the correction method of pressure intensity near wall region.
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