Article
Physics, Applied
Huifeng Miao, Zhibo Zhang, Yun Wu, Wei Cui, Yinghong Li
Summary: A novel semiconductor enhanced plasma synthetic jet actuator (SEPSJA) with reduced driving voltage and improved jet performance is proposed in this study, showing better efficiency and higher jet velocity compared to traditional PSJA. The SEPSJA is worth further exploration in the field of flow control.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Huifeng Miao, Zhibo Zhang, Yun Wu, Yangyang He, Yinghong Li
Summary: This study introduces a novel self trigger three-electrode plasma synthetic jet actuator that can extend the electrode distance with low breakdown voltage, leading to higher precursor shock velocity and discharge efficiency compared to traditional PSJA.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Engineering, Aerospace
Ming Xue, Zhangsong Ni, Chao Gao, Bin Wu, Borui Zheng
Summary: A tri-electrode dielectric barrier discharge plasma actuator is proposed to achieve a deflected synthetic jet by changing the polarity and magnitude of the direct current component. The experiment results show that different discharge modes induce different vortices, resulting in different jet deflection effects.
Article
Thermodynamics
Jun -Lin Chen, Ying-Hao Liao
Summary: This study experimentally investigates the influence of an annular plasma actuator embedded in a bluff body burner on flame stabilization, specifically focusing on propane jet diffusion flames. The actuator aims to create a vortex ring near the jet exit to alter the flow velocity and achieve flame stabilization. The results show that the presence of the induced vortex ring may lead to repetitive flame reattachment, with the degree of interaction between the flame and the vortex ring depending on the imposed flow momentum.
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW
(2023)
Article
Engineering, Aerospace
Rubing Liu, Shenghui Xue, Wentao Wei, Qi Lin, Kun Tang
Summary: This study proposes an air-supplied actuator with a check valve externally connected to the cavity to improve its gas-supplying ability and jet performance. High-speed schlieren is employed to photograph the internal flow field of the discharge chamber, revealing that the inhalation airflow velocity of the jet orifice is doubled when the actuator is continuously working in the effective frequency band under the combined action of additional air supply from the check valve in the inhalation recovery stage. The results have important implications for the performance optimization of the air-supplied actuator.
Article
Engineering, Aerospace
Rubing Liu, Ruixin Lin, Guangce Lian, Shenghui Xue, Qi Lin
Summary: The study designed a multi-channel PSJ actuator driven by a four-stage Marx high-voltage generator, determining its basic discharge characteristics and jet performance, and explored the effect of discharge frequency on jet performance through theoretical analysis and experimental research.
Article
Thermodynamics
Jun-Lin Chen, Ying-Hao Liao
Summary: This study experimentally investigates flow interactions downstream of a bluff-body incorporated with an annular plasma actuator. It is found that square wave operation of the actuator leads to stronger discharge and more significant flow effects. The formation of a vortex ring downstream of the bluff-body is shown to have a positive impact on flow control and flame stabilization.
APPLIED THERMAL ENGINEERING
(2021)
Article
Mechanics
Xi Geng, Weilin Zhang, Zhiwei Shi, Zheng Li, Qijie Sun, Zhikun Sun
Summary: The frequency characteristics of nanosecond plasma synthetic jet actuators were studied using the high-speed Schlieren method, revealing three typical working states: continuous, critical, and discontinuous. The relationship between discharge frequency and actuation states was discussed, defining critical and saturated discharge frequencies, and exploring the effects of geometric parameters on frequency characteristics.
Article
Thermodynamics
Yuan-wei Lyu, Jing-zhou Zhang, Jing-yang Zhang, Yong Shan
Summary: This study uses experimental measurement and numerical simulation to reveal the variation of flow field during the issuing of a Plasma Synthetic Jet (PSJ) actuator. It is found that the high-pressure zone generated by plasma deposition shifts reciprocally between the bottom and top of the cavity. The pressure inside the cavity and the velocity of the PSJ attenuate while oscillating in real-time. The geometry of the actuator significantly affects the performance of the PSJ.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Engineering, Mechanical
Yoshiaki Abe, Taku Nonomura, Makoto Sato, Hikaru Aono, Kozo Fujii
Summary: This study investigated the mechanisms of separation control using a synthetic jet (SJ) and plasma actuator (PA) on an NACA0015 airfoil. Large-eddy simulations (LES) showed that there were four main differences in the induced flows of the SJ and the PA, but both methods exhibited a common feature of better recovering the lift-to-drag ratio in the frequency range of F (+) = 6.0-20.
Article
Thermodynamics
Jinfeng Li, Xiaobing Zhang
Summary: This study proposes a novel three-dimensional center energy deposition model to investigate the heat and mass transfer mechanism of hybrid synthetic jet actuators (HSJA). Simulation results reveal that the electrodes have an impact on the creation and evolution of vortices inside the cavity. The three-dimensional nonconstant center energy deposition model uncovers the real heat and mass transfer mechanism of HSJA.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Optics
Ye Yuan, Yan Zhang, Cheng Guo, Xiaolu Kang, Zhong Yan, Xiaoping Huang, Qing Zhao
Summary: A new optical analysis method for plasma characterization is proposed in this paper. Instead of using the complex spectral diagnosis method, plasma characteristics are obtained directly by measuring the plasma luminous color. The corresponding relationship of electron temperature, electron density data points, and luminous color is established and analyzed. The research results indicate that this optical analysis method is feasible and promising for fast plasma characterization.
CHINESE OPTICS LETTERS
(2022)
Article
Mechanics
Zeinab Zavarian, G. R. Abdizadeh, Sahar Noori
Summary: This paper presents a numerical study on the effect of four key parameters on flow control around a wind turbine airfoil. The results show that the location of the DBD actuator, as well as the power and length of the momentum jet, have significant effects on flow control, leading to smaller vortices and lower drag coefficient.
Article
Computer Science, Information Systems
Xin Wang, Jie Yan, Jaspreet Singh Dhupia, Xiaosong Zhu
Summary: This article demonstrates the effectiveness of PSJA in the flapless control system by studying the characteristics of the aviation actuator and its influence on the air field around the aircraft.
Article
Physics, Multidisciplinary
Huiyu Yang, Lei Chen, Guohua Hu, Baohuai Wang, Shiang Wang, Wenjun Zhang, Xingyu Zhang, Peng Song
Summary: In order to widely apply the high concentration of active substances in plasma jets, it is necessary to increase the length of the jet and the contact area between the jet and the object of action. The effect of discharge voltage on plasma jet length was studied by measuring the discharge voltage and capturing images of the discharge.