Parametric study on the characteristics of a SDBD actuator with a serrated electrode
Active flow control based on surface dielectric barrier discharge（SDBD） has become a focus of research in recent years,due to its unique advantages and diverse potential applications.Compared with the conventional SDBD with straight electrodes,the serrated electrode-based SDBD has a great advantage...
Saved in:
| Published in | Plasma science & technology Vol. 19; no. 6; pp. 66 - 73 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
IOP Publishing
01.06.2017
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1009-0630 1009-0630 |
| DOI | 10.1088/2058-6272/aa5b39 |
Cover
| Summary: | Active flow control based on surface dielectric barrier discharge（SDBD） has become a focus of research in recent years,due to its unique advantages and diverse potential applications.Compared with the conventional SDBD with straight electrodes,the serrated electrode-based SDBD has a great advantage due to its 3D flow topology.It is believed that the boundary layer separation of moving objects can be controlled more effectively with this new type of SDBD.In SDBD with a serrated electrode,the R（tip sharpness） and N（tip number per unit length） have a great influence on the discharge and induced airflow characteristics.In this paper,a parametric study of the characteristics of SDBD with a serrated electrode has been conducted with different ranges of R and N.Aspects of the power consumption,the steady medium temperature distribution,and the maximum induced airflow velocity have been investigated.The results indicate that there is a critical value of R and N where the maximum power consumption and induced airflow velocity are achieved.The uniformity of the steady temperature distribution of the medium surface is found to be more dependent on N.We found that the accelerating effects of the induced airflow can be evaluated with the Schlieren technique,which agree well with the results from the pitot tube. |
|---|---|
| Bibliography: | SDBD actuator, serrated electrode, power consumption, temperature distribution, Schlieren images 34-1187/TL Active flow control based on surface dielectric barrier discharge（SDBD） has become a focus of research in recent years,due to its unique advantages and diverse potential applications.Compared with the conventional SDBD with straight electrodes,the serrated electrode-based SDBD has a great advantage due to its 3D flow topology.It is believed that the boundary layer separation of moving objects can be controlled more effectively with this new type of SDBD.In SDBD with a serrated electrode,the R（tip sharpness） and N（tip number per unit length） have a great influence on the discharge and induced airflow characteristics.In this paper,a parametric study of the characteristics of SDBD with a serrated electrode has been conducted with different ranges of R and N.Aspects of the power consumption,the steady medium temperature distribution,and the maximum induced airflow velocity have been investigated.The results indicate that there is a critical value of R and N where the maximum power consumption and induced airflow velocity are achieved.The uniformity of the steady temperature distribution of the medium surface is found to be more dependent on N.We found that the accelerating effects of the induced airflow can be evaluated with the Schlieren technique,which agree well with the results from the pitot tube. Guoqiang GAO , Kaisheng PENG, Lei DONG , Wenfu WEI , Guangning WU （School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, People＇s Republic of China） PST-2016-0398.R2 Institute of Plasma Physics |
| ISSN: | 1009-0630 1009-0630 |
| DOI: | 10.1088/2058-6272/aa5b39 |