Formulation of dispersed phase combustion physics for aero engine: from low-pressure combustion in high-altitute relight operation to high-pressure combustion in steady operation of engine
| Project/Area Number |
15H04201
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Aerospace engineering
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| Research Institution | Yamaguchi University |
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Principal Investigator |
Mikami Masato 山口大学, 大学院創成科学研究科, 教授 (20274178)
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| Co-Investigator(Kenkyū-buntansha) |
瀬尾 健彦 山口大学, 大学院創成科学研究科, 准教授 (00432526)
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| Co-Investigator(Renkei-kenkyūsha) |
KIKUCHI Masao 宇宙航空研究開発機構, 有人宇宙部門, 研究員 (80371144)
NOMURA Hiroshi 日本大学, 生産工学部, 教授 (30246847)
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| Research Collaborator |
SAPUTRO Herman
SANO Narita
MOTOMATSU Naoya
YOSHIDA Yasuko
IWAI Kentaro
NAGATA Kentaro
UNEYAMA Ryo
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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 |
¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2015: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
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| Keywords | 燃焼 / 液滴群 / 燃え広がり / 群燃焼 / 高圧 / 航空宇宙工 / 航空宇宙工学 |
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| Outline of Final Research Achievements |
This research conducted microgravity experiments of flame spread over
droplet-cloud elements and randomly distributed droplet clouds in a wide pressure range in order to improve understanding of the flame spread and group-combustion excitation in fuel sprays under high-altitude relight condition of aero engines. The experiments elucidated the effects of droplet diameter ratio, local droplet interaction and ambient pressure. The results show that the thermal conduction from a burning droplet to the next unburned droplet plays an important role and the burning lifetime of the base droplet controls the flame-spread limit. Anomalous flame-spread behavior was observed over 1.5 MPa and near the group-combustion-excitation limit in randomly distributed droplet clouds. These phenomena should be elucidated in future researches.
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Report
(4 results)
Research Products
(27 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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[Presentation] Flame-spread behavior over randomly distributed droplet clouds in “Group Combustion” experiments aboard Kibo/ISS2017
Author(s)
Masato Mikami, Takehiko Seo, Yasuko Yoshida, Hiroshi Nomura, Yusuke Suganuma, Osamu Moriue, Akira Umemura, Tetsuya Sakashita, Masao Kikuchi, Masaki Nokura, Takuma Suzuki, Daniel L. Dietrich
Organizer
The 7th International Symposium on Physical Sciences in Space
Related Report
Int'l Joint Research
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