Investigation on the effects of two-dimensional inhomogeneity in the combustion-initiation process of dispersed liquid fuel
| Project/Area Number |
15K05835
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
Moriue Osamu 九州大学, 工学研究院, 教授 (70363124)
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| Research Collaborator |
EIGENBROD Christian
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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 |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 自着火 / 燃料液滴 / 干渉作用 |
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| Outline of Final Research Achievements |
This study expands the knowledge of spontaneous ignition of isolated fuel droplets to that of spray through the investigation of effects of droplet interaction. In the spontaneous ignition of most hydrocarbon fuels, two-stage ignition occurs, which is cool-flame appearance and subsequent hot-flame appearance. Two-stage ignition of a droplet pair was observed in microgravity using two interferometers, which enables three-dimensional observation. Cool flame appeared on the outer side of the droplet pair, and hot flame appeared on the inner side. In the spontaneous ignition of a droplet pair with different initial diameters, a smaller droplet promoted ignition normally, though it delayed in the limited conditions like near ignitable limit. Such tendencies were explained through local balance between species transport and chemical reactions.
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Report
(4 results)
Research Products
(16 results)
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[Journal Article] Flame spread of droplet-cloud elements with two-droplet interaction in microgravity2017
Author(s)
Mikami, M., Watari, H., Hirose, T., Seo, T., Saputro, H., Moriue, O, Kikuchi, M.
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Journal Title
Journal of Thermal Science and Technology
Volume: 12
Issue: 2
Pages: JTST0028-JTST0028
DOI
NAID
ISSN
1880-5566
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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