三维爆震引射增推性能数值计算及验证  

Numerical Simulation and Experimental Study on Thrust Augmentation of 3D Pulse Detonation Engine Ejector Systems

作　　者：秦亚欣 高歌[2] 

机构地区：[1]中国航空研究院新技术研究所,北京100012 [2]北京航空航天大学能源与动力工程学院,北京100191

出　　处：《科学技术与工程》2013年第33期9855-9862,共8页Science Technology and Engineering

摘　　要：对三维圆形爆震室引射增推性能进行了数值模拟和试验验证。应用数值方法对爆震波衰退为激波后的传播、排除过程进行了多循环模拟;分析了三维爆震波非稳态引射流场的变化过程;得到了与文献一致的结果。对多循环爆震引射过程的瞬时推力、冲量以及爆震室出口的质量流量进行了分析研究。引射喷管在不同位置处时,对爆震室的推力增量值进行了对比,发现在引射喷管轴向位置X=0 mm处时推力增量达到最大值,试验验证了这一结论。Numerical simulation and experimental study on thrusaugmentation of 3D round pulse detonation engine ejectosystemwere carried out. The detailof detonation wave broke up to shock wave were simulated. The developmenand performance of three-dimensional round detonative chambeejection were analyzed, which were close to the resultof reference. The instantaneouthrust, impulse and masflow rate of multiple-cycle detonation ejection were researched. Thrusaugmentationof pulse detonative chambeejection systemadifferenaxial loca- tion were contrastively studied, and found thathe maximum thrusaugmentation waobtained athe axial location X = 0 mm in the ejectosystem driven, which waverified by experimental study.

关 键 词：脉冲爆震发动机 引射喷管 推力增量 数值计算 

分 类 号：V231.22[航空宇航科学与技术—航空宇航推进理论与工程]