Influence of Burst-Modulated Frequency on Sawtooth DBD Plasma Actuator for Flow Separation Control

2018 ◽  
Author(s):  
Longjun Wang ◽  
Chi Wai Wong ◽  
Xiaodong Fu ◽  
Yu Zhou
Keyword(s):  
Flow Separation ◽  
Plasma Actuator ◽  
Separation Control ◽  
Dbd Plasma ◽  
Flow Separation Control

Mechanism of flow separation control with DBD plasma actuator obtained by Ape X Deep Q Network Control

2021 ◽  
Author(s):  
Satoshi Shimomura ◽  
Satoshi Sekimoto ◽  
Akira Oyama ◽  
Kozo Fujii ◽  
Hiroyuki Nishida
Keyword(s):  
Flow Separation ◽  
Plasma Actuator ◽  
Network Control ◽  
Separation Control ◽  
Dbd Plasma ◽  
Flow Separation Control

Numerical Simulation of Flow Induced by Multiple DBD Plasma Actuators

2016 ◽  
Author(s):  
Hua Shan ◽  
Shawn Aram ◽  
Yu-Tai Lee
Keyword(s):  
Numerical Simulation ◽  
Boundary Layer ◽  
Flow Separation ◽  
Plasma Actuator ◽  
Plasma Actuators ◽  
Separation Control ◽  
Simulation Tool ◽  
Streamwise Direction ◽  
Dbd Plasma ◽  
Flow Separation Control

Active flow separation control using dielectric barrier discharge (DBD) plasma actuators oriented in the spanwise direction has been successfully investigated by the authors using an integrated numerical simulation tool that couples the unsteady Reynolds averaged Navier-Stokes (URANS) or large eddy simulation (LES) solver for incompressible flows with the DBD electro-hydrodynamic (EHD) body force model. Although many experimental and numerical investigations have indicated that the spanwise-oriented DBD plasma actuator is an effective flow control method, the application is difficult to extend from model-scale to full-scale problems, partly due to the required high amplitude and high bandwidth excitation. Also, the flow control mechanism associated with a spanwise-oriented DBD actuator is mainly direct momentum injection, therefore, the effectiveness of actuation is sensitive to the location of the DBD actuator relative to the location of flow separation. On the other hand, a few experimental studies have shown promising results using the DBD Vortex Generator (DBD-VG) consisting of multiple plasma DBD actuators oriented in the streamwise direction. By generating streamwise vortices extending a long distance downstream, the DBD-VGs enhance the mixing of the inner and outer layers of turbulent boundary layer flows. As a result, the boundary layer can better withstand an adverse pressure gradient. When applied to flow separation control, the effectiveness of the DBD-VGs should be less sensitive to location of flow separation. The present work extends the capability of the integrated numerical simulation tool from a single spanwise-oriented DBD plasma actuator to multiple DBD plasma actuators oriented in any direction, including the streamwise direction. As a demonstration of the new capability in the DBD-URANS coupled solver, numerical simulations of flow induced by a DBD-VG actuator with an array of exposed electrodes in a quiescent environment, as well as in a turbulent boundary layer over a flat plate, are carried out. The numerical simulation successfully reproduced the longitudinal vortices embedded in the boundary layer.

Wing Flow Separation Control Using Asymmetrical and Symmetrical Plasma Actuator

2017 ◽  
Vol 54 (1) ◽  
pp. 301-309 ◽  
Author(s):  
Xin Zhang ◽  
Hua-Xing Li ◽  
Yong Huang ◽  
Wan-Bo Wang
Keyword(s):  
Flow Separation ◽  
Plasma Actuator ◽  
Separation Control ◽  
Flow Separation Control

Flow Separation Control by Plasma Actuator with Nanosecond Pulsed-Periodic Discharge

AIAA Journal ◽  
2009 ◽  
Vol 47 (1) ◽  
pp. 168-185 ◽  
Author(s):  
D. V. Roupassov ◽  
A. A. Nikipelov ◽  
M. M. Nudnova ◽  
A. Yu. Starikovskii
Keyword(s):  
Flow Separation ◽  
Plasma Actuator ◽  
Separation Control ◽  
Flow Separation Control ◽  
Periodic Discharge

scholarly journals Flow separation control on swept wing with nanosecond pulse driven DBD plasma actuators

2015 ◽  
Vol 28 (2) ◽  
pp. 368-376 ◽  
Author(s):  
Guangyin Zhao ◽  
Yinghong Li ◽  
Hua Liang ◽  
Menghu Han ◽  
Yun Wu
Keyword(s):  
Flow Separation ◽  
Nanosecond Pulse ◽  
Plasma Actuators ◽  
Separation Control ◽  
Swept Wing ◽  
Dbd Plasma ◽  
Flow Separation Control

Plasma-Actuator Burst-Mode Frequency Effects on Leading-Edge Flow-Separation Control at Reynolds Number 2.6×105

AIAA Journal ◽  
2017 ◽  
Vol 55 (11) ◽  
pp. 3789-3806 ◽  
Author(s):  
Hikaru Aono ◽  
Soshi Kawai ◽  
Taku Nonomura ◽  
Makoto Sato ◽  
Kozo Fujii ◽  
...  
Keyword(s):  
Reynolds Number ◽  
Flow Separation ◽  
Leading Edge ◽  
Plasma Actuator ◽  
Mode Frequency ◽  
Separation Control ◽  
Flow Separation Control ◽  
Frequency Effects ◽  
Burst Mode ◽  
Edge Flow
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