高密实含能颗粒床对流燃烧过程的实验研究

EXPERIMENTAL STUDIES OF CONVECTIVE COMBUSTION IN HIGH-PACKEDLY ENERGETIC GRANULAR BEDS

高密实含能颗粒床对流燃烧过程的实验研究张小兵，金志明，袁亚雄（南京理工大学动力学院南京２１００９４）关键词对流燃烧；含能颗粒床；实验研究１引言在高能燃料火箭推进系统和粒状火药炮膛内，火药颗粒燃烧的热量传递机理是强迫对流。当装填密度高到一定程度时，火焰...

Expermental studies of convective combustion in high-packedly energetic granular beds are carried out with ionization probes and piezoelectric transducers in a high pressure combustor,whose strength limit is above 1000 MPa.The flame front and its velocity and pressure wave are successfully obtained.It is found that the pressure wave propagates in front of the flame front.The burning mechanisms of convective burning processes are revealed.The effects of ignition strength,loading density and propellant size on burning processes are also investigated.The experimental results play an important role in investigating the mechanisms of abnormal pressure in rocket propulsion system and gun propulsion system.