| Project/Area Number |
15K17723
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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 |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Fukuoka Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | レイリーテイラー不安定性 / 渦輪 / 分裂個数 / モード選択 / 液滴 / 分裂 / 重力不安定性 / 変形 / 界面 |
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| Outline of Final Research Achievements |
When a droplet falls into a viscous solution, the droplet breaks up spontaneoustly in the falling process. It was reported that the droplet deformed to a vortex ring and the instability of the vortex ring leaded to the breakup of the droplet.The origin of the instability, however, had not been clarified. In order to know the origin of the vortex instability, we investigated wavelengths of the instability in experiments. The wavelengths agreed with the wavelengths of Rayleigh Taylor instability, obtained from a numerical simulation. Thus, we considered that Rayleigh Taylor instability played an important role for the instability of the vortex ring.
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