東北大学 · 工学
Akihiro Hayakawa教授の研究室では、炭素を排出しないアンモニアを燃料とする内燃機関の実用化に向け、高圧下におけるアンモニア炎の燃焼特性とNOx排出挙動の解明を主眼としています。実験的手法と数値シミュレーションを融合し、NOx生成・低減のメカニズムを解明することで、環境に配慮した次世代エネルギー技術の基盤を構築しています。特に、アンモニアの低燃焼強度という課題を克服するための反応機構と流れ場の制御に関する基礎的研究が進められています。
Figures are computed from collected data and may differ slightly.
Ammonia is a carbon-free fuel and its application to internal combustion engines is expected. However, few studies on ammonia flames, especially at high pressures, have been carried out because ammonia has not been considered to be a fuel owing to its lower combustion intensity. Most of NOx, which is formed by ammonia combustion, is considered to be the fuel NOx. The objectives of this study were to investigate the fundamental characteristics of NOx experimentally, such as NO emission and chemil
Burning velocity of spherically propagating turbulent flames kept increasing with flame propagation. On the other hand, turbulent burning velocity obtained from burner stabilized flame is constant for a given turbulence intensity. This difference of turbulent burning velocity characteristic was discussed by Abdel-Gayed and Bradley et al. For spherically propagating flames, not all turbulent eddies contribute to the turbulence that affect the turbulent flame. Small flames may be wrinkled only by
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