306 反射板によるデトネーション波の伝播促進 : 反射板距離の影響

概要

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Quick initiation of a detonation wave in a combustion chamber is important to realize a high-performance pulse detonation engine. A possible method is to generate a detonation wave in a shock-tube and release the detonation wave into the chamber. In this paper, a reflecting board is installed in the combustion chamber near the shock-tube exit where the pipe diameter expands sharply. It prevents the detonation wave disappearing at the expanding area near the shock tube exit. The relation of the cell size at the shock-tube exit and the distance between the shock-tube exit and the reflecting board is investigated in various initial pressures and rates of dilution of argon. Main results obtained in this study are in the following : The cell size in the shock tube can define the propagation limit of the detonation wave in the combustion chamber regardless of initial pressure and the rate of dilution of argon. The optimal distance of reflecting board was found to be 15 mm from the shock-tube exit.
社団法人日本機械学会の論文
2002-10-05