摘要
利用新型两相激波管成功地研究了中等强度入射激波诱导的均匀悬浮粉尘间断面点火现象。平均直径为１０μｍ的玉米粉尘由流化床均匀地分散在氧气或空气中。悬浮粉尘间断面激波点火过程由纹影法连续拍摄。结果表明：颗粒浓度对点火延迟时间影响不大，空气中的玉米粉尘点火延迟大于氧气中的值，低马赫数激波条件下尤为明显。
The ignition phenomena at the interface of suspended dust and oxidative gas induced by an incident shock wave of medium strength have been studied using a newly developed two-phase shock tube. Corn starch with 10μm average diameter has been suspended uniformly in oxygen or air by means of a fluidized bed. The shock ignition process at the interface of dust suspension has been continuously observed by the schliren photograph.Results show that the effect of dust concentration on ignition delay is insignificant ,and the ignition delay of corn starch/air mixture is longer than that o f corn starch/oxygen mixture. The difference is more pronounced at low strength shock conditions.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1996年第2期143-148,共6页
Explosion and Shock Waves
基金
VW-Stiftung基金
国家教委留学回国人员基金
关键词
粉尘间断面
入射激波
点火
延迟时间
ss: interface of suspension,incident shock, ignition delay
