脉冲爆震发动机旋流式气动阀工作机理和扰流器阻力特性的实验研究  

Experimental Investigation on Mechanism of Swirling Aerovalve and Drag Coefficient of Turbulence Generation in PDE

作　　者：郑殿峰[1] 王家骅[1] 王波[1] 李建中[1] 范育新[1] 张会强[2] 林文漪[2] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016 [2]清华大学工程力学系,北京100084

出　　处：《南京航空航天大学学报》2005年第1期101-105,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：在脉冲爆振发动机 (Pulse detonation engine,PDE)上采用旋流式气动阀 ,并获得成功应用。在此基础上 ,通过测量旋流式气动阀正反向流动阻力系数 ,研究了旋流式气动阀的工作机理。同时 ,还研究扰流片形状、阻塞比、扰流片片数及间距对扰流器阻力系数的影响。研究表明 :PDE旋流式气动阀反向流动阻力系数仅比正向流动阻力系数大 5 %～ 3 6% ,并通过试验结果建立了 PDE旋流式气动阀工作机理。试验中发现 :扰流器的阻力系数和扰流片型式、堵塞比、扰流片数目和间距有关。这些研究结果对 PDE旋流式气动阀和扰流器设计有较大的参考价值。The swirling aerovalve is firstly used in pulse detona ti on engine (PDE) in China. Its operational mechanism is investigated by measuring its forward and reverse flow drag coefficients. Meanwhile, the effects of shape , blockage ratio, vane number and space of turbulence generation on the drag coe fficient are investigated too. It is shown that the reverse flow drag coefficien t is 5%～36% greater than that of the forward flow, and the operating mechanis m of the swirling aerovalve is established based on the experimental results. Th e drag coefficients of the turbulence generator in PDE depend on the shape, bloc kage ratio, vane number, and space of turbulence generator. Results are used for design of the swirling aerovalve and turbulence generator in PDE.

关 键 词：脉冲爆震发动机 气动阀 扰流器 阻力特性 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]