Muroran Institute of Technology Department of Mechanical Systems Engineering, Faculty of Engineering
Institute of Fluid Science, Tohoku University
出版者
宇宙航空研究開発機構
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2004論文集
雑誌名(英)
JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2004
巻
JAXA-SP-04-012
ページ
224 - 229
発行年
2005-03-25
抄録（英）
The purposes of the present study were to clarify the three-dimensional structure of hydrogen flame reinforced by a plasma torch and to analyze the effect of the position of a hydrogen jet relative to the plasma torch on the combustion characteristics. Results of the present analysis clarify that the combustion efficiency of hydrogen jet injection into the upper stream of the plasma torch becomes larger than that of hydrogen jet injection into the lower stream. When the hydrogen jet is injected into the lower stream of the plasma torch, the combustion efficiency is reduced with the increase of the interval between the plasma torch and the hydrogen jet. In addition, as the interval decreases, an extension of the recirculation zone, which causes a significant increase of combustion efficiency, is observed. On the other hand, when the hydrogen jet is injected into the upper stream of the plasma torch, a larger interval generally results in larger combustion efficiency. When the plasma torch is injected with high injection pressure, penetration of the plasma torch is extended and mixing of hydrogen and air is significantly improved, resulting in higher combustion efficiency.
プラズマトーチによる超音速流中での着火・保炎現象の解析
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