2022 Fiscal Year Final Research Report
Foundation of flame synthesis platform based on low Peclet number field
| Project/Area Number |
19K04246
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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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| Review Section |
Basic Section 19020:Thermal engineering-related
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| Research Institution | Chubu University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 粒子の加熱時間の制御方法 / 粒子の加熱温度の制御方法 / 粒子の加熱雰囲気の制御方法 / 移流と拡散の効果 |
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| Outline of Final Research Achievements |
Flame synthesis in a low Peclet number field, in which the effect of convection is more minor and the effect of molecular and thermal diffusion is more significant than in flames established by ordinary burners, is achieved by supplying an oxidizer flow with reactant particles to clustered diffusion microflames. In this study, the mechanism of the change in the heating time, the heating temperature, and the heating atmosphere of the particles and its control method were investigated experimentally and numerically. The results show that higher temperatures and longer heating times, as well as further progress of melting and reaction, can be achieved by increasing the oxygen concentration in the oxidizer, reducing the oxidizer flow rate, increasing the fuel flow rate, and using fuel with a higher heating value and flame temperature.
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| Free Research Field |
燃焼工学
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| Academic Significance and Societal Importance of the Research Achievements |
予混合火炎を用いた従来の火炎合成では，加熱温度と加熱時間，加熱雰囲気を独立して制御することは困難で，制御範囲も狭いなどの大きな制約がある．微小拡散火炎群中に反応物粒子を酸化剤気流に乗せて供給する本研究の低ペクレ数場の火炎合成では，その制約から解かれ，高温短時間，高温長時間，低温長時間の加熱など制御と，その制御範囲を広げて酸化・還元反応や，融解をより進展させることが可能となり，火炎合成による材料合成の発展性を見いだすことができた．また学術的には，低ペクレ数場において，移流と拡散の効果が火炎面の形成にどのように現れるかについて明らかにし，低ペクレ数燃焼反応場の理解の進展に寄与した．
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