Study on mechanism of Lagrangian mixing and chemical reaction near the turbulent/non-turbulent interface and its modeling
| Project/Area Number |
25289031
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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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 |
Sakai Yasuhiko 名古屋大学, 工学(系)研究科(研究院), 教授 (20162274)
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| Co-Investigator(Kenkyū-buntansha) |
TSUNODA HIROYUKI 山梨大学, 総合研究部, 准教授 (10207433)
KUBO TAKASHI 名城大学, 理工学部, 准教授 (20372534)
SUZUKI HIROKI 山口大学, 理工学研究科, 助教 (10626873)
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| Co-Investigator(Renkei-kenkyūsha) |
TERAHIMA OSAMU 名古屋大学, 工学(系)研究科(研究院), 助教 (50570751)
NAGATA KOUJI 名古屋大学, 工学(系)研究科(研究院), 教授 (50274501)
ITOU YASUMASA 名古屋大学, 工学(系)研究科(研究院), 准教授 (40346078)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2013: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
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| Keywords | 流体工学 / 乱流 / 物質混合 / 界面 / 化学反応 |
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| Outline of Final Research Achievements |
In this study, scalar mixing and second-order chemical reaction (A+B→P) near the turbulent/non-turbulent interface in liquid were investigated experimentally and numerically. Here, in particular are examined characteristics near the two kinds of interface which are perpendicular to the streamwise direction: leading edge, across which the turbulent region (including A) turns into the non-turbulent region (including B) toward streamwise direction, and trailing edge, across which the non-turbulent region turns into the turbulent region toward streamwise direction. The result shows that chemical reaction rate near the leading edge is larger than that near the trailing edge. The difference becomes large as Damköhler number increases. In addition, we proposed a new numerical method for turbulent reactive flows which combine Direct Numerical Simulation, Large Eddy Simulation and Probability Density Method. The validity of the method was confirmed by the experiment.
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Report
(4 results)
Research Products
(73 results)
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[Presentation] On Non-Equilibrium Region in Grid Turbulence2014
Author(s)
Kouji Nagata, Teppei Saiki, Yasuhiko Sakai and Yasumasa Ito
Organizer
One-Day Workshop: Turbulence Out of Classical Equilibrium in Nature and Engineering and Multiscale-Generated Flows
Place of Presentation
University Centre of Bertinoro, Italy
Year and Date
2014-09-21
Related Report
Invited
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[Presentation] Direct and Large Eddy Simulations of Grid turbelence2014
Author(s)
Kouji Nagata, Yi Zhou, Tomoaki Watanabe, Yasuhiko Sakai and Yasumasa Ito
Organizer
JSPS Supported Meeting on Interscale Transfers and Flow Topology in Equilibrium and Nonequilibrium Turbulence
Place of Presentation
University of Sheffield,UK
Year and Date
2014-09-15 – 2014-09-16
Related Report
Invited
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