Experimental Investigation of Flow Separation Control Using Dielectric Barrier Discharge Plasma Actuators  

作　　者：李钢 聂超群 李轶明 朱俊强 徐燕骥 

机构地区：[1]Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100080,China [2]Tisai Flow Measurement Research Center,Beijing 100871,China

出　　处：《Plasma Science and Technology》2008年第5期605-611,共7页等离子体科学和技术（英文版）

基　　金：National Natural Science Foundation of China(Nos.50676094,50676095,50776086 and 50736007);Fundamental Researches of National Defense in Chinese Academy of Sciences(No.AB20070090)

摘　　要：Influence of plasma actuators as a flow separation control device was investigated experimentally. Hump model was used to demonstrate the effect of plasma actuators on external flow separation, while for internal flow separation a set of compressor cascade was adopted. In order to investigate the modification of the flow structure by the plasma actuator, the flow field was examined non-intrusively by particle image velocimetry measurements in the hump model experiment and by a hot film probe in the compressor cascade experiment. The results showed that the plasma actuator could be effective in controlling the flow separation both over the hump and in the compressor cascade when the incoming velocity was low. As the incoming velocity increased, the plasma actuator was less effective. It is urgent to enhance the intensity of the plasma actuator for its better application. Methods to increase the intensity of plasma actuator were also studied.Influence of plasma actuators as a flow separation control device was investigated experimentally. Hump model was used to demonstrate the effect of plasma actuators on external flow separation, while for internal flow separation a set of compressor cascade was adopted. In order to investigate the modification of the flow structure by the plasma actuator, the flow field was examined non-intrusively by particle image velocimetry measurements in the hump model experiment and by a hot film probe in the compressor cascade experiment. The results showed that the plasma actuator could be effective in controlling the flow separation both over the hump and in the compressor cascade when the incoming velocity was low. As the incoming velocity increased, the plasma actuator was less effective. It is urgent to enhance the intensity of the plasma actuator for its better application. Methods to increase the intensity of plasma actuator were also studied.

关 键 词：dielectric barrier discharge PLASMA separation flow control hump model compressor cascade 

分 类 号：O461[理学—电子物理学]