| Project/Area Number |
26820042
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
Tsuda Shinichi 九州大学, 工学(系)研究科(研究院), 准教授 (00466244)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 量子性 / 水素 / 気泡核 / キャビテーション / 液体水素 / 気泡初生 |
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| Outline of Final Research Achievements |
The aim of this study is a clarification of the effect of quantum nature of liquid hydrogen (uncertainty of the position of the atomic nucleus and momentum) on the bubble inception rate, which is the indicator of the ease of bubble formation. Therefore, molecular simulation to reproduce the liquid hydrogen state in the molecular scale was conducted, and the following two results were obtained. (1)The quantum nature of hydrogen decreases the bubble inception rate by 5-10 orders from a macroscopic point of view (thermodynamic point of view). (2) The quantum nature has an effect to increase the molecular volume apparently from a microscopic (molecular) point of view, and this effect is one of the causes of the above result (1).
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