Electrohydrodynamic flow control with a glow-discharge surface plasma

Roth, J. R.; Sherman, D.M.; Wilkinson, Stephen

doi:10.2514/3.14531

Cited by 102 publications

(134 citation statements)

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“…By contrast, DBD actuators are characterized by the presence of a dielectric slab (e.g., PMMA 13 , glass 14 or glass-filled epoxy 15 ) positioned between two high curvature electrodes ( Fig. 1(a)).…”

Section: Introductionmentioning

confidence: 99%

“…Somewhat counter-intuitively, the transient migration of charged species within ac fields also gives rise to steady electric winds. 14,15,18,19 Simulation studies 20,21 have shown how the processes of ionization, ion/electron transport, and recombination result in a time-averaged, electrohydrodynamic force that drives the gas flows observed in experiments.…”

Section: Introductionmentioning

confidence: 99%

“…There are two common designs for electric wind actuators: 1) "point-plane" actuators 12 , and 2) dielectric barrier discharge (DBD) actuators [13][14][15][16][17][18][19][20][21] . In the former, a static voltage (typically several to tens of kV) is applied between an electrode of high curvature -the "point", usually a needle or wire -and a low curvature counter electrode -the "plane", often a plate or ringpositioned some distance away ( Fig.…”

Section: Introductionmentioning

confidence: 99%

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Electric winds driven by time oscillating corona discharges

Drews

Cademartiri

Whitesides

et al. 2013

Journal of Applied Physics

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We investigate the formation of steady gas flows -so-called electric winds -created by point-plane corona discharges driven by time oscillating (ac) electric fields. By varying the magnitude and frequency of the applied field, we identify two distinct scaling regimes: (i) a low frequency (dc) regime and (ii) a high frequency (ac) regime. These experimental observations are reproduced and explained by a theoretical model describing the transport and recombination of ions surrounding the discharge and their contribution to the measured wind velocity. The two regimes differ in the spatial distribution of ions and in the process by which ions are consumed. Interestingly, we find that ac corona discharges generate strong electric forces localized near the tip of the point electrode, while dc corona discharges generate weaker forces distributed throughout the interelectrode region. Consequently, the velocity of the electric winds (>1 m/s) generated by ac discharges is largely independent of the position of the counter electrode.a Author to whom correspondence should be addressed. Electronic mail: kjmbishop@engr.psu.edu 2 The unified theoretical description of dc and ac electric winds presented here reconciles previous observations of winds driven by dc corona and ac dielectric barrier discharges; insights from the model should also prove useful in the design of other plasma actuators.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electric winds driven by time oscillating corona discharges

Drews

Cademartiri

Whitesides

et al. 2013

Journal of Applied Physics

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“…Dielectric barrier discharge (DBD) plasma actuators have been widely studied both experimentally and numerically [1][2][3][4][5][6][7][8][9]. First successful flow separation control experiments were performed by Roth et al [1] using DBD plasma actuators, driven by low-frequency sinusoidal signal.…”

Section: Introductionmentioning

confidence: 99%

“…First successful flow separation control experiments were performed by Roth et al [1] using DBD plasma actuators, driven by low-frequency sinusoidal signal. Several research groups used similar DBD driving voltage and performed parametric study of the DBD input and output parameters [2][3].…”

Section: Introductionmentioning

confidence: 99%

Kinetic Simulations of Nonequilibrium Plasmas

Likhanskii

2011

AIP Conference Proceedings

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Abstract. The paper presents study of one of the examples of nonequilibrium plasmas -dielectric barrier discharge in atmospheric air -using kinetic particle-in-cell code VORPAL. It has been demonstrated that the use of state-ofthe-art methods for solution of the electrostatic problems and the concept of variable-weight particles for reduction number of particles in dense plasma regions made simulations numerically efficient. Using the developed model the propagation of the cathode-directed streamer driven by 4ns positive pulse has been analyzed in both 2D and 3D. The model reproduced all essential physical phenomena of the streamer propagation. The model has been validated via grid resolution study and study of the concept of variable-weight particles.

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A plasma‐fluid model for EHD flow in DBD actuators and experimental validation

Mushyam

Rodrigues

Páscoa

2019

Numerical Methods in Fluids

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Summary A numerical method to simulate plasma induced electrohydrodynamic flow is proposed in this study. The numerical model consists of three components. Firstly, a potential module to simulate temporal potential and electric field generated in the ionized fluid. Secondly, a plasma module to simulate plasma development and charge particle densities. Finally, a fluid module to simulate the flow affected by the body forces induced by the movement of the charged particles. Fluid flow is modeled using modified predictor‐corrector strategy as proposed in the marker and cell method. The velocity field was corrected to achieve incompressible flow by calculating pressure correction factors, considered in all cells. Numerical convergence and time sensitivity analysis were carried to confirm grid independence and determine an efficient time step for simulations. Numerical computations are validated by comparing with experimental results of discharge currents and current densities. They were found to be in very good agreement thus providing an extensive validation. Furthermore, quiescent flow over a dielectric barrier discharge actuator is simulated in the this study, using the proposed plasma‐fluid model, to model flow evolution and resolve temporal flow features for detailed analysis. The streamline and vorticity plots were analyzed and compared with experimental results, and flow results were found to be in‐line with the experiments.

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Electrohydrodynamic flow control with a glow-discharge surface plasma

Cited by 102 publications

References 0 publications

Electric winds driven by time oscillating corona discharges

Electric winds driven by time oscillating corona discharges

Kinetic Simulations of Nonequilibrium Plasmas

A plasma‐fluid model for EHD flow in DBD actuators and experimental validation

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