2011 Fiscal Year Final Research Report
Investigation of multiscale characteristics of fluid flows through the detail analysis of interfacial physical phenomena
| Project/Area Number |
21246033
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TAKAGI Shu 東京大学, 大学院・工学系研究科, 教授 (30272371)
SUGIYAMA Kazuyasu 東京大学, 大学院・工学系研究科, 特任准教授 (50466786)
KINEFUCHI Ikuya 東京大学, 大学院・工学系研究科, 助教 (30456165)
OGASAWARA Toshiyuki 大阪府立大学, 工学研究科, 助教 (00552184)
ICHIYANAGI Mitsuhisa 上智大学, 理工学部, 助教 (00584252)
TAKEUCHI Shintaro 大阪大学, 大学院・工学研究科, 准教授研究員 (50372628)
YOSHINAKA Kiyoshi 独立行政法人産業技術研究所, ヒューマンライフテクノロジー研究部門, 研究員 (90358341)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 流体工学 / 混相流 / 表面・界面活性 / 気泡 / マイクロ流体 |
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| Research Abstract |
The following 4 points are achieved in this study.
(1) Using the results of Molecular Dynamics simulation, a novel mathematical model for Dissipative Particle Dynamics simulation with coarse-grained particles was developed.(2) Drag and lift force acting on a bubble moving in 3-dimensioanl paths in surfactant aqueous solutions was modeled through the detail experiment.(3) Numerical simulation was conducted to investigate the surfactant effect on the bouncing back of two bubbles. It was shown that both Marangoni effect and surface deformation are important for a bubble to bounce back.(4) A novel shape micro channel was designed as a microbubble generation devic and bubbles of diameter were successfully generated. Through the development of a high-speed micro PIV system, we obtained the knowledge of generating smaller microbubbles. Furthermore, a channel for the surface coating bubbles with organic phase are newly designed and microbubbles with the surface coating are successfully generated.
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Research Products
(14 results)
