1998 Fiscal Year Final Research Report Summary
Ignition and Flame Propagation in Combustible Mixtures
| Project/Area Number |
09045046
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | University-to-University Cooperative Research |
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| Research Field |
社会システム工学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HIRANO Toshisuke The University of Tokyo, Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (70007615)
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| Co-Investigator(Kenkyū-buntansha) |
GIERAS M. Warsaw University of Technology, Dept.of Power and Aeronautical Engineering, Ass, 動力および航空工学科, 助教授
GLINKA Wieslaw Warsaw University of Technology, Dept.of Power and Aeronautical Engineering, Ass, 動力および航空工学科, 助教授
WOKANSKI Piotr Warsaw University of Technology, Dept.of Power and Aeronautical Engineering, Pro, 動力および航空工学科, 教授
SUZUKI Masataro The University of Tokyo, Graduate School of Engineering, Research Associate, 大学院・工学系研究科, 助手 (10282576)
DOBASHI Ritsu The University of Tokyo, Graduate School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (30237177)
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| Project Period (FY) |
1997 – 1998
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| Keywords | Combustible mixture / Combustible dust / Combustible droplet / Flame propagation / Ignition / Flame structure / Heterogeneous system / Thermal diffusion |
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| Research Abstract |
To promote a fundamental study of combustion safety on ignition and flame propagation in combustible mixtures, the academic exchange was done between the University of Tokyo and Warsaw University of Technology. The study was made by exchanging the knowledge and technology of the participant researchers during visiting each other. Visits of 4 researchers have been supported by this Grant-in-Aid for Scientific Research.
The exchange of knowledge and technology was mainly focused on the combustion mechanisms of combustible particle clouds. A lot of data concerning this study were provided from the participant researchers of both universities.
From the University of Tokyo : Data on the propagating mechanism and structure of the flame propagating through combustible particle clouds (Stearic acid, 1-Octadecanol, Metal particle).
From Warsaw University of Technology : Data on ignition phenomena and structure of the flame propagating through combustible particle clouds (mainly 1-Octadecanol).
As a result, the following points were elucidated.
- The structure of a flame propagation through combustible particle (Flame structure, Thickness of preheat zone, Thickness of reaction zone)
- The propagating mechanism of a flame propagation through combustible particle clouds (Mechanism of heat transfer, Flame propagating velocity)
From these results, it is known that the thickness of such kind of heterogeneous flame propagating through combustible particle clouds is much thicker than that of the flame propagating through homogeneous combustible premixed mixture, and the propagating velocity of the heterogeneous flame becomes much slower. This kind of knowledge is very important to properly understand the combustion phenomena in a heterogeneous system. This program could promote the study of heterogeneous combustion and also academic exchange between Japan and Poland.
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Research Products
(6 results)
