EHD Force and Electric Wind Produced by Plasma Actuators Used for Airflow Control

Bénard, Nicolas; Moreau, E.

doi:10.2514/6.2012-3136

Cited by 30 publications

(22 citation statements)

References 94 publications

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“…26,27 This technique can visualize the flows with density gradients, and thus is capable for exploring the interaction of plasma with ambient air. In our experiments, the conventional schlieren system is used to visualize the electric wind caused by the plasma actuator, as shown in Fig.…”

Section: E Schlieren Visualizationmentioning

confidence: 99%

Surface potential distribution and airflow performance of different air-exposed electrode plasma actuators at different alternating current/direct current voltages

Yang

Yan

et al. 2015

Physics of Plasmas

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Asymmetric surface dielectric barrier discharge (SDBD) plasma actuators have been intensely studied for a number of years due to their potential applications for aerodynamic control. In this paper, four types of actuators with different configurations of exposed electrode are proposed. The SDBD actuators investigated are driven by dual-power supply, referred to as a fixed AC high voltage and an adjustable DC bias. The effects of the electrode structures on the dielectric surface potential distribution, the electric wind velocity, and the mean thrust production are studied, and the dominative factors of airflow acceleration behavior are revealed. The results have shown that the actions of the SDBD actuator are mainly dependent on the geometry of the exposed electrode. Besides, the surface potential distribution can effectively affect the airflow acceleration behavior. With the application of an appropriate additional DC bias, the surface potential will be modified. As a result, the performance of the electric wind produced by a single SDBD can be significantly improved. In addition, the work also illustrates that the actuators with more negative surface potential present better mechanical performance. V C 2015 AIP Publishing LLC.

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Section: E Schlieren Visualizationmentioning

confidence: 99%

Surface potential distribution and airflow performance of different air-exposed electrode plasma actuators at different alternating current/direct current voltages

Yang

Yan

et al. 2015

Physics of Plasmas

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“…The smoke flow can be used to investigate the performance of thrust because the force here is integrated over a spatial airflow domain [44]. Moreover, the body force increase is due to a higher maximal mean ionic wind velocity and a thicker wall jet [44]. This larger wind velocity and thicker jet can induce larger smoke flow jetting angle and hence larger thrust force.…”

Section: Airflow Field Visualizationsmentioning

confidence: 99%

Geometry Effects of SDBD Actuator on Atmospheric-Pressure Discharge Plasma Airflow Acceleration

Yang

Yan

et al. 2015

IEEE Trans. Plasma Sci.

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Surface dielectric barrier discharge (SDBD), used as the plasma actuator for airflow control at atmospheric pressure, has been widely concerned over the past decades. In this work, four different electrode configurations, i.e., copper mesh, thin wire, blade, and aluminum foil, are chosen as exposed electrodes for the SDBD plasma actuator. The different effects of the four structures on the airflow acceleration behavior are experimentally investigated through the discharge current, surface potential distribution, ionic wind velocity, and mean thrust production. The result shows that the actuator with the copper mesh exposed electrode can generate the maximal induced force, while the actuator with the aluminum foil exposed electrode can generate the minimal induced force. This difference, as analyzed, is mainly due to the distinct discharge characteristics, i.e., different discharge asymmetry and surface potential, caused by the specifically designed exposed electrode configurations. This paper illustrates that the actuator with low surface potential has preferable mechanical performance.Index Terms-Aluminum foil-aluminum foil surface dielectric barrier discharge (ASDBD), blade-aluminum foil SDBD (BSDBD), copper mesh-aluminum foil SDBD (CSDBD), discharge current, electrical power consumption, ionic wind velocity, metal wire-aluminum foil SDBD (WSDBD), SDBD plasma actuators, surface potential, thrust force.

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“…One is to develop efficient operations of DBD plasma actuator which can make a significant impact on the flow field using only small power [3][4][5]. The other is to enhance the body force produced by DBD plasma actuator [6][7][8][9][10]. To enhance the body force, Tri-Electrode Plasma Actuator (TED-PA) has been developed [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Performance Improvement Mechanism of Tri-Electrode Plasma Actuator

Nishida

Takao

Matsuno

2015

46th AIAA Plasmadynamics and Lasers Conference

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Tri-electrode plasma actuator (TED-PA), which has a third electrode with high DC voltage, can generate stronger jet than that of conventional two-electrode type plasma actuator. However, the behavior of the jet in TED-PA is unexpected; the induced jet is deflected upward. To clarify the jet deflection mechanism and performance improvement mechanism of TED-PA, discharge plasma and flow field is numerically simulated based on the three-fluid plasma model and the incompressible Navier-Stokes equations with the body force term, respectively. The results show the jet deflection appears in both cases of negative and positive DC voltage; a rightward jet from the AC electrode and a leftward jet from the DC electrode are generated and the collision of the two jets generate the upward jet. The jet becomes stronger by the DC electrode due to two factors; the negative body force generation around the DC electrode and the positive body force enhancement around the AC electrode. The negative force generation around the DC electrode results from the drift motion of the positive ions in the positive DC voltage case, and on the other hand, that of the negative ions in the negative DC voltage case. The positive force enhancement around the AC electrode is due to the electric field intensification by the DC voltage. Nomenclature D e ,D p ,D n = diffusion coefficient for electron, positive ion and negative ion e = elementary charge E= electric field vector f = body force vector j e ,j p j n = electron, positive ion and negative ion current density n e ,n p ,n n = electron, positive ion and negative ion number density r ep = recombination coefficient between electron and positive ion r pn = recombination coefficient between positive ion and negative ion t = time T = one period of the AC voltage v e = mean velocity of electron α = ionization coefficient ε 0 , ε r = electric permittivity in the vacuum and relative electric pemittivity of the dielectric γ = secondary electron emission coefficient μ e , μ p , μ n = electron, positive ion and negative ion mobility η = attachment coefficient σ = surface charge density 1 Associate Professor, Institute of Engineering, Member AIAA. 2 Graduate student, Mechanical Systems Engineering. 3 Lecturer, Department of Mechanical and Aerospace Engineering, AIAA senior member. Downloaded by KUNGLIGA TEKNISKA HOGSKOLEN KTH on July 17, 2015 | http://arc.aiaa.org |

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EHD Force and Electric Wind Produced by Plasma Actuators Used for Airflow Control

Cited by 30 publications

References 94 publications

Surface potential distribution and airflow performance of different air-exposed electrode plasma actuators at different alternating current/direct current voltages

Surface potential distribution and airflow performance of different air-exposed electrode plasma actuators at different alternating current/direct current voltages

Geometry Effects of SDBD Actuator on Atmospheric-Pressure Discharge Plasma Airflow Acceleration

Numerical Study on Performance Improvement Mechanism of Tri-Electrode Plasma Actuator

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