ラム加速器の熱閉塞モード燃焼流れ場に及ぼす飛翔体速度の影響 : 熱工学,内燃機関,動力など

概要

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HURAMAC, a ram accelerator facility at Hiroshima University, has a unique feature, that the ram acceleration tube has rectangular cross section. This rectangular bore ram tube enables itself to install the optical windows and visualization inside the ram tube can be realized. Burning flow fields around the accelerating projectile are investigated for the thermal-choking mode in methane-oxygen-carbon dioxide gas mixtures by taking pictures using an instantaneous shadowgraph method as well as by getting pressure histories at the upper wall of the window section. Three typical shots with different velocities are compared. It is shown that the position of the leading flame held at the surface of the projectile depends on the velocity. It is also found that two stable flame holding positions exist. The position of the flame so much affects the flow pattern around the projectile.
一般社団法人日本機械学会の論文
2001-04-25