Graduate School, Hokkaido University
Graduate School, Hokkaido University
Graduate School, Hokkaido University
Graduate School, Hokkaido University
Graduate School, Hokkaido University
出版者
宇宙航空研究開発機構(JAXA)
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
雑誌名(英)
JAXA Special Publication: Proceedings of 44th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2012
44th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2012 (July 5-6, 2012. Toyama International Conference Center), Toyama Japan
抄録（英）
Detonation initiation is one of the most important problems of pulse detonation engines. A reflector installed near a predetonator exit is effective to maintain detonation waves. The incident detonation waves from the predetonator transform its shape from planer detonation wave to cylindrical detonation wave and from cylindrical detonation wave to toroidal detonation wave around the reflector. To prevent the detonation wave downstream of a reflector from disappearing, it is important to form a cylindrical detonation waves upstream of the reflector. To define the minimal quantity of driver gas to form cylindrical detonation waves and to make sense of the mechanism that determine the quantity, the authors uses a large-bore plate combustor and varied the following parameters to find the quantity to form a cylindrical detonation wave : the quantity of driver gas and nitrogen concentration. To evaluate the quantity of the driver gas, the authors us""" es overfilling radius. The over filling radius is the radius of the cylinder that is equal to the driver gas filled in the combustion chamber. Results indicate that the mixing between driver gas and target gas is critical to successful transmission. To form the cylindrical detonation wave reliably, the concentration of driver gas must be maintained at a high level so that the cell size doesn’t become large.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
大口径パルスデトネーションエンジン用イニシエータにおける円筒デトネーション波の伝播に関する研究
61958013.pdf
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