Control of flow separation over a wing model with plasma synthetic jets

作     者：Zhi SU Guozheng SONG Haohua ZONG Hua LIANG Jun LI Like XIE Xuecheng LIU Weiliang KONG 苏志;宋国正;宗豪华;梁华;李军;谢理科;刘雪城;孔维良

作者机构：Science and Technology on Plasma Dynamics LaboratoryAir Force Engineering UniversityXi'an 710038People's Republic of China Institute of Aero-EngineSchool of Mechanical EngineeringXi’an Jiaotong UniversityXi'an 710049People's Republic of China The Green Aerotechnics Research Institute of Chongqing Jiaotong UniversityChongqing 404100People's Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2022年第24卷第6期

页      面：135-147页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China(Nos.12002384 and 11802341) the National Key Laboratory Foundation of China(No.614220210200112) the Academician Workstation Foundation of the Green Aerotechnics Research Institute of Chongqing Jiaotong University(No.GATRI2020C06003) 

主　　题：flow separation plasma synthetic jet density dielectric barrier discharge 

摘      要：An array of 30 plasma synthetic jet actuators(PSJAs)is deployed using a modified multichannel discharge circuit to suppress the flow separation over a straight-wing *** lift and drag of the wing model are measured by a force balance,and the velocity fields over the suction surface are captured by a particle imaging velocimetry *** show that the flow separation of the straight wing originates from the middle of the model and expands towards the wingtips as the angle of attack *** flow separation can be suppressed effectively by the PSJAs *** best flow control effect is achieved at a dimensionless discharge frequency of F^+=1,with the peak lift coefficient increased by 10.5%and the stall angle postponed by 2°.To further optimize the power consumption of the PSJAs,the influence of the density of PSJAs on the flow control effect is investigated.A threshold of the density exits(with the spanwise spacing of PSJAs being 0.2 times of the chord length in the current research),below which the flow control effect starts to deteriorate *** addition,for comparison purposes,a dielectric barrier discharge(DBD)plasma actuator is installed at the same location of the *** the same power consumption,4.9%increase of the peak lift coefficient is achieved by DBD,while that achieved by PSJAs reaches 5.6%.