| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Thermophoresis is the phenomenon that a small particle in a gas with a temperature gradient receives a force toward the lower temperature side. This phenomenon is supposed to influence practically on the movement of particulate matter in exhaust gas from combustors. The influence of gas components on the thermophoretic velocity is investigated in this work. Microgravity experiments are conducted and a theoretical model is examined. It is found that the accommodation coefficients, which are parameters included in the theoretical formula, differ among tested gas species. Correlations of these coefficients with some gas properties are examined and clear correlation is found with the molecular diameter. Binary gas mixtures are also examined and a suitable method is proposed for determining the coefficients.
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