2013 Fiscal Year Final Research Report
Quantum vortex visualization by neutron radiography
| Project/Area Number |
24656120
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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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) |
2012-04-01 – 2014-03-31
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| Keywords | 乱流 / 超流動 / 量子渦 |
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| Research Abstract |
When the liquid helium has its temperature below 2.2K, it becomes a super fluid, and indicates the unique properties. For instance, there exits the mass flow without friction, anomalous heat transport by a mechanism known as thermal counter flow, and quantized vortex lines in the turbulent state. These characteristics have been investigated by temperature fluctuation measurement and the second sound attenuation technique. However, they are model dependent and do not give the dynamical information of the fluid flow. For this reason, we have been interested in applying the visualization technique to the super fluid helium in order to obtain the local velocity fluctuation, and study the statistical characteristics.
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