等离子体气动激励诱导气流加速的实验  

Experiment on the induced airflow acceleration by plasma aerodynamic actuation

作　　者：赵小虎[1] 李应红[1] 李益文[1] 吴云[1] 马清源[1] 

机构地区：[1]空军工程大学工程学院,西安710038

出　　处：《航空动力学报》2009年第11期2436-2442,共7页Journal of Aerospace Power

基　　金：教育部"新世纪优秀人才支持计划"

摘　　要：为揭示等离子体气动激励诱导气流加速的作用机理及影响因素,对静止空气条件下的诱导气流速度进行了测量.实验结果表明:等离子体气动激励启动瞬间形成启动涡,随即旋涡向下游运动并最终演化为近壁面射流;激励电压增大时,诱导气流速度增大,近壁面射流的射程增加;激励频率增大时,诱导气流速度变化不明显;多组电极激励器诱导的气流速度周期性地先增大后减小,并且诱导气流加速的效果沿流向方向逐渐减弱.To show the basic mechanism and the influential factors of induced airflow acceleration by plasma aerodynamic actuation,the induced airflow velocities were measured when the ambient air was still.The experimental conclusion shows that once the instant plasma aerodynamic actuation is started,a start-up vortex appears,and then moves behind and finally evolves into jet stream close to the actuator surface;the induced airflow velocities and the range of the jet stream increase when the actuation voltage rises;t...

关 键 词：等离子体 气动激励 诱导 启动涡 射流 

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]