Low-Pressure Effects on a Single DBD Plasma Actuator

2010 ◽  
Author(s):  
Kirk Bottelberghe ◽  
Zakaria Mahmud
Keyword(s):  
Low Pressure ◽  
Plasma Actuator ◽  
Pressure Effects ◽  
Dbd Plasma

scholarly journals Surface velocity model of the flow caused by a DBD plasma actuator

2019 ◽  
Vol 85 (869) ◽  
pp. 18-00368-18-00368 ◽  
Author(s):  
Keunseob LEE ◽  
Satoshi KIKUCHI ◽  
Shigeki IMAO
Keyword(s):  
Velocity Model ◽  
Plasma Actuator ◽  
Surface Velocity ◽  
Dbd Plasma

Wall Normal Jet Produced by DBD Plasma Actuator With Doughnut-Shaped Electrode

2008 ◽  
Author(s):  
Takehiko Segawa ◽  
Hiro Yoshida ◽  
Shinya Takekawa ◽  
Timothy Jukes ◽  
Kwing-So Choi
Keyword(s):  
Atmospheric Pressure ◽  
Room Temperature ◽  
Particle Image ◽  
Barrier Discharge ◽  
Plasma Actuator ◽  
Dbd Plasma ◽  
Annular Jet ◽  
Image Velocimetry ◽  
Inner Diameter ◽  
Annular Jets

Properties of coaxial annular jets produced by a dielectric barrier discharge (DBD) plasma actuator with a doughnut shaped electrodes were investigated under atmospheric pressure and room temperature. The actuator consists of two circular electrodes sandwiching a thin dielectric layer. By applying 0 – ±3.3 kV between the electrodes at radio frequencies, the plasma jet is formed near the inner edge of the top electrode. The radial jet runs toward the center of the electrode and then impinges at the center to generate a wall normal annular jet. The evolution of the wall normal jet was observed precisely using particle image velocimetry (PIV) system. It was found that characteristic velocities increase in proportion to the bursting frequency and inversely proportional to the inner diameter of the electrode at the surging time of the voltage at 5.0 × 10−6sec.

Design Exploration of a DBD Plasma Actuator for Massive Separation Control

2015 ◽  
Author(s):  
Takeshi Watanabe ◽  
Hikaru Aono ◽  
Tomoaki Tatsukawa ◽  
Taku Nonomura ◽  
Akira Oyama ◽  
...  
Keyword(s):  
Plasma Actuator ◽  
Separation Control ◽  
Dbd Plasma ◽  
Design Exploration ◽  
Massive Separation

2D Simulation and Scaling of DBD Plasma Actuator in Air

2008 ◽  
Author(s):  
E Bogdanov ◽  
A Kudryavtsev ◽  
Alexander Kuranov ◽  
I Kozlov ◽  
T Tkachenko
Keyword(s):  
Plasma Actuator ◽  
Dbd Plasma ◽  
2D Simulation

scholarly journals Coherent structures induced by dielectric barrier discharge plasma actuator

2017 ◽  
Vol 31 (32) ◽  
pp. 1850038 ◽  
Author(s):  
Xin Zhang ◽  
Huaxing Li ◽  
Kwing So Choi ◽  
Longfei Song
Keyword(s):  
Flow Control ◽  
Dielectric Barrier Discharge ◽  
Coherent Structures ◽  
High Speed ◽  
Barrier Discharge ◽  
Plasma Actuator ◽  
Dbd Plasma ◽  
Peak Voltage ◽  
Dielectric Barrier ◽  
Piv Measurement

The structures of a flow field induced by a plasma actuator were investigated experimentally in quiescent air using high-speed Particle Image Velocimetry (PIV) technology. The motivation behind was to figure out the flow control mechanism of the plasma technique. A symmetrical Dielectric Barrier Discharge (DBD) plasma actuator was mounted on the suction side of the SC (2)-0714 supercritical airfoil. The results demonstrated that the plasma jet had some coherent structures in the separated shear layer and these structures were linked to a dominant frequency of [Formula: see text] = 39 Hz when the peak-to-peak voltage of plasma actuator was 9.8 kV. The high speed PIV measurement of the induced airflow suggested that the plasma actuator could excite the flow instabilities which lead to production of the roll-up vortex. Analysis of transient results indicated that the roll-up vortices had the process of formation, movement, merging and breakdown. This could promote the entrainment effect of plasma actuator between the outside airflow and boundary layer flow, which is very important for flow control applications.

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