等离子体流动控制技术原理及典型应用  

Mechanism and Applications of Plasma Flow Control Technology

作　　者：史志伟[1] 杜海[1] 李铮[1] 陆纪椿 蒋旋 

机构地区：[1]南京航空航天大学航空宇航学院,南京210016

出　　处：《高压电器》2017年第4期72-78,共7页High Voltage Apparatus

基　　金：国家自然科学基金重点项目(11532007)~~

摘　　要：等离子体流动控制激励器由于其具有响应时间短、激励频带宽、器件小、能耗低的技术优势,是流动控制领域最活跃的控制方式之一。等离子体激励器在飞行器的增升减阻、性能增强、力矩控制等方面具有重要的应用前景。文中通过实验和数值模拟方法研究了介质阻挡放电等离子体激励器(DBD)和等离子体合成射流激励器(PSJ)的基本气动特性。AC-DBD激励器主要产生射流扰动,NS-DBD等离子体激励器产生的扰动包括压力波、射流和旋涡结构,PSJ激励器能形成压力波和速度更高的射流扰动。采用AC-DBD激励器可以在低速流动下,推迟平板转捩;采用NS-DBD激励器可以在来流速度为25 m/s时,抑制翼型的流动分离,同时NSDBD在Ma=4.6时,可以控制圆柱脱体激波的激波强度。Because of its advantages in flow control such as with a short response time, wide frequency range, small scale and low energy consumption, the plasma flow control actuator is one of the most active technologies in flow control. Plasma actuator is widely used for air vehicle＇s lift augmentation and drag reduction, performance en- hancements and moment control. The basic characterizes of surface dielectric barrier discharge and plasma syn- thetic jet have been researched. The dominant disturbance of AC-DBD is jet, NS-DBD actuator disturbs the flow in various types such as temperature disturbance, density variation and momentum injection, and the PSJ could in- duce shock wave and the jet. The AC-DBD actuator could delay transition on a flat at low speed velocity condition; the NS-DBD actuator could control the flow separation on an airfoil up to 25 m/s, at the same time, the NS-DBD ac- tuator has realized the control of shock wave upon a cylinder at Ma=4.6.

关 键 词：等离子体 合成射流 流动控制 纳秒脉冲 

分 类 号：V241[航空宇航科学与技术—飞行器设计] V219