2009 Fiscal Year Final Research Report
Investigation on combustion-initiation process of dispersed blended liquid fuels at high pressures
| Project/Area Number |
20760137
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thermal engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
MORIUE Osamu Kyushu University, 大学院・工学研究院, 准教授 (70363124)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 噴霧燃焼 / 熱機関 / 新燃料 / 高圧力 |
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| Research Abstract |
The final objective is to establish of the model to predict the vaporization and ignition characteristics of blended fuel spray at high pressure depending on fuel composition and ambient-gas conditions. In the present study, isolated droplets were studied as an elementary process. Spontaneous ignition of n-decane/ethanol blended fuel droplets in high-temperature and high-pressure air was experimentally observed. Fuel composition, air temperature and pressure were varied, and vaporization rate, ignition delay, flame temperature and flame diameter were obtained as database. Generally, spontaneous ignition was suppressed with increasing ethanol composition, which is more volatile and less reactive. Numerical calculation reproduced the phenomena successfully.
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