To achieve practical uses of large bore Pulse Detonation Engines, the authors have proposed the enhanced reflection type detonation initiator. Here, successful transmission from a planar detonation wave in a predetonator to a self-sustainable expanding cylindrical detonation wave at a cylindrical path is a key issue. In a previous single-cycle research, the authors revealed that the necessary overfilling radius of the driver gas (stoichiometric H2-O2 mixture) to initiate a cylindrical wave is 75 mm. The aim of this study is to investigate the effect of multi-cycle operation condition on the transmission to a cylindrical detonation wave. The result shows that a planar detonation wave with theoretical CJ speed is formed but a cylindrical detonation wave is not formed at any overfilling radius from 50 to 175 mm. Soot track records at the cylindrical path surfaces and a mixing analysis of driver and target mixtures using ANSYS FLUENT strongly indicate that residual nitrogen gases at the exit of the predetonator have a negative effect on the transmission.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
反射を利用した爆轟波生成装置の連続運転条件における円筒爆轟波の生成
AA1530023031.pdf
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