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等离子体流动控制是基于等离子体气动激励的主动流动控制,可用于改善飞行器和动力装置空气动力特性。为了探索等离子体流动控制的内在机理,在不同的参数条件下,对等离子体气动激励的诱导气流速度进行了实验研究。实验结果表明:等离子体气动激励可以把激励器表面空气加速到每秒几米的速度,诱导气流与激励器表面有一个约5°的夹角,且气流经加速后会形成漩涡结构。固定激励频率,诱导气流速度随激励电压增大而增大;固定激励电压,诱导气流速度受激励频率的影响不大;激励器布局对等离子体气动激励器的性能有重要影响。
Plasma flow control is based on active flow control of the plasma pneumatically actuated and can be used to improve the aerodynamics of aircraft and power plants. In order to explore the inherent mechanism of plasma flow control, the experimental results of the induced gas velocity of plasma pneumatically excited by different parameters were studied. The experimental results show that the plasma aerodynamic excitation accelerates the surface air of the actuator to a speed of a few meters per second, inducing an angle of about 5 ° between the air flow and the surface of the actuator, and the air stream accelerates to form a vortex structure. The fixed excitation frequency and the induced airflow velocity increase with the increase of the excitation voltage. The fixed excitation voltage and the induced airflow velocity have little effect on the excitation frequency. The layout of the exciter has an important influence on the performance of the plasma aerodynamic actuator.