@inproceedings{oai:jaxa.repo.nii.ac.jp:00003505, author = {桧物, 恒太郎 and 亀山, 頌太 and 大関, 敦 and 榎並, 聖也 and 脇田, 督司 and 戸谷, 剛 and 永田, 晴紀 and Himono, Tsunetaro and Kameyama, Shota and Ozeki, Atsushi and Enami, Takaya and Wakita, Masashi and Totani, Tsuyoshi and Nagata, Harunori}, book = {宇宙航空研究開発機構特別資料: 第48回流体力学講演会/第34回航空宇宙数値シミュレーション技術シンポジウム論文集, JAXA Special Publication: Proceedings of the 48th Fluid Dynamics Conference / the 34th Aerospace Numerical Simulation Symposium}, month = {Dec}, note = {第48回流体力学講演会/第34回航空宇宙数値シミュレーション技術シンポジウム (2016年7月6日-8日. 金沢歌劇座), 金沢市, 石川, 48th Fluid Dynamics Conference /the 34th Aerospace Numerical Simulation Symposium (July 6-8, 2016. The Kanazawa Theatre), Kanazawa, Ishikawa, Japan, To realize practical use of a Pulse Detonation Engine, reliable initiation of detonation waves is important and the amount of oxidizer for initiation is needed to decrease to get high specific impulse. So the authors propose a detonation initiator to solve these problems. In this initiator, detonation waves propagate around a reflector through some transition. First, planar detonation waves transit to cylindrical detonation waves. Second, cylindrical detonation waves transit to toroidal detonation waves. Finally, toroidal detonation waves propagate to planar detonation waves propagating large bore chamber. In the propagation and transition process, the propagation limit of cylindrical detonation waves is unclear even though there is some hypothesis. That is to say, cylindrical detonation waves are quenched by its curvature or the formation of their cell structure is inhibited by narrow channel. In this paper, cell sizes are correlated to threshold condition for quenching. The proportion of cell sizes to the channel width of planer channel and the radius of cylindrical detonation waves are researched. It became obvious that cylindrical detonation waves can propagate stably if the proportion of the cell size to the radius of cylindrical detonation waves is larger than 25 and have the potential to survive and propagate if the proportion of the cell size to the radius of cylindrical detonation waves is larger than 17., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1630031030, レポート番号: JAXA-SP-16-007}, pages = {211--216}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {円筒デトネーション波の伝播限界へ流路幅と円筒波面の曲率が与える影響}, volume = {JAXA-SP-16-007}, year = {2016} }