| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
Unsteady combustion behaviors of the isolated droplet for alcohols and hydrocarbons were investigated and the effect of fuel properties, ambient components and soot were focused upon. Ethanol combustion in air showed a quasi-steady behavior and a weak effect of the water condensation into the droplet. N-buthanol with a higher boiling temperature shows a gradual increasing trend of the burning rate. An unsteady stepwise increase in the burning rate for sooting fuels were clearly observed. High concentrations of ambient carbon dioxide suppress the soot production and it results in a mitigation of the unsteady behavior. On the other hand, high concentrations of argon enhances the soot production and the unsteady behavior was also promoted. The effect of sooting and ambient factors on the unsteady burning behaviors were clarified.
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