Abstract: Novel fluidic actuators based on synthetic jet technology are used to experimentally investigate the effectiveness on the coaxial jets mixing.The influences and flow structures of mixing efficiency by actuator control are studied,and the physics mechanism is deeply analyzed to constitute the foundation of active flow control technology.Since mixing efficiency of internal and external bypass jets is enhanced a lot,the length of high-speed region is shortened and the mixing flow becomes more uniform.

Key words: Synthetic jet;Actuator;Diaphragm;Coaxial jet;Mixing efficiency

摘要： 利用试验方法研究合成射流激励器对同轴射流掺混控制的作用效果,探索在激励器控制作用下掺混效率的变化规律和流动结构,分析了掺混效果被控制的物理机制。利用激励器零质量射流大幅度提高内外涵道射流的掺混效率,缩短高速区的长度,流动掺混更均匀。

关键词: 合成射流;激励器;膜片;同轴射流;掺混效率