高速旋转条件下点火具的燃烧特性试验研究

借助高速旋转试验台,研究了高速旋转条件下中心端面点火和侧向点火2种点火具的燃烧特性.结果表明,随着转速的提高,火焰面积增大,点火具燃烧时间减小,燃速加快.在转速为12 000 r/min的试验条件下,点火具内的点火药燃烧速度达到30 mm/s,是静态试验条件下的3倍以上;同时,点火药燃烧火焰在高速旋转条件下明显增大,其燃烧高度和宽度均比静态下多5～8 cm以上,燃烧强度更加猛烈.随着转速的增大,点火具烧蚀程度也愈加严重.

Study on Combustion Characters of Igniter Under High Speed Rotation Condition

Two kinds of igniters named center end burning igniter and side igniter were placed on the high speed rotation test stand to investigate the combustion characters under high-speed rotation condition.The results show that with the increase of rotational speed,the flame area enlarges,and the combustion time declines,and the burning rate increases.The burning rate reaches 30 mm/s while the rotation is 12 000 r/min,which is 3 times more than that under the static state.The flame area enlarges markedly,and both ...