Electric wind generation by nanosecond repetitively pulsed microplasmas

Orrière, Thomas; Moreau, E.; Pai, David

doi:10.1088/1361-6463/ab372f

Cited by 16 publications

(11 citation statements)

References 49 publications

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“…Over the past decade, there has been a great interest in using non-thermal plasma actuators for active flow control of aerodynamic surfaces [1][2][3][4][5][6][7]. Plasma actuators have the potential to control a fluid system while staying silent, instantaneous, and compact [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…The interaction between free ions, accelerated by E-field, working fluid, and surfaces can be utilized in applications such as aerodynamic drag reduction [11][12][13] and electric propulsion [14][15][16][17]. Still, despite their lower electromechanical efficiencies, than corona driven flow, DBD actuators are more effective at providing a consistent electro-hydrodynamic (EHD) force [4,9]. The current DBD applications are primarily limited to flow control at low-speed conditions due to their relatively lower EHD forces [14,18,19].…”

Section: Introductionmentioning

confidence: 99%

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Empirical relations for discharge current and momentum injection in dielectric barrier discharge plasma actuators

Tang¹,

Vaddi²,

Mamishev³

et al. 2021

J. Phys. D: Appl. Phys.

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Dielectric barrier discharge (DBD) plasma actuators with an asymmetric, straight edge electrode configuration generate a wall-bounded jet without moving parts. Mechanistic description of the interaction between the Coulombic forces and fluid motion as a function of DBD parameters remains unclear. This paper presents an experimental investigation of DBD actuators, including electrical current associated with microdischarges, plasma volume and the wall jet momentum over a range of alternating current (AC) frequencies (0.5–2 kHz) and peak-to-peak voltages up to 19.5 kV. Discharge current is measured with a high temporal resolution, plasma volume is characterized optically and the momentum induced by the DBD wall jet is computed based on the axial velocities measured downstream of the actuator using a custom-built pitot tube. Discharge current analysis demonstrated asymmetry between the positive and negative semi-cycle; both currents yielded a power–law relationship with empirical fitting coefficients. Plasma length varies linearly and volume quadratically with voltage. Although plasma length reached an asymptotic value at a higher frequency, the plasma volume grows due to the increasing height of the ionization region. In a simple two-dimensional configuration, the DBD wall jet momentum shows near-linear dependency with discharge current in the range of voltages and frequencies considered in this work. The presented empirical model characterizes the DBD wall jet momentum and the discharge current based only on the AC inputs. With the estimation of plasma volume, the model can be applied for determining more realistic boundary conditions in numerical simulations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Empirical relations for discharge current and momentum injection in dielectric barrier discharge plasma actuators

Tang¹,

Vaddi²,

Mamishev³

et al. 2021

J. Phys. D: Appl. Phys.

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“…A trade-off between thrust and thrust-topower is seen in Eq. (8). The expression also predicts that larger gap spacings should provide higher thrust-to-power at a given thrust level, in a similar manner to corona-based thrusters.…”

mentioning

confidence: 88%

“…7 This results in a higher thrust-to-power ratio (a relevant measure of the static efficiency), suggesting that decoupled thrusters could increase the endurance and mission capability of solid-state aircraft. Alternative decoupled architectures have also been proposed; for example, Orrie `re et al 8 recently studied a decoupled EAD device with a nanosecond repetitively pulsed discharge ion source.…”

mentioning

confidence: 99%

Performance of decoupled electroaerodynamic thrusters

Gomez-Vega

Abel

et al. 2021

Applied Physics Letters

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Solid-state aerodynamic devices, which use electroaerodynamics (EAD) to produce a propulsive force, have the potential to make drones and airplanes significantly quieter and may provide benefits in sustainability and manufacturability. In these devices, ions are accelerated between two electrodes by an electric field, colliding with neutral air molecules and producing an ionic wind and a thrust force. The authors' previous work showed that a "decoupled" device architecture, which separates the ionization and ion acceleration processes, can increase thrust density and thrust-to-power compared to the prevailing corona-discharge-based EAD architecture, which uses a single DC potential for both processes. However, the discharge characteristics of this decoupled architecture have not been previously determined. Here, we experimentally characterize a decoupled EAD thruster with a wire-to-wire dielectric barrier discharge (DBD) ion source: an AC voltage drives the DBD, which ionizes neutral air molecules at the emitting electrode, while a separate DC voltage accelerates ions toward the collecting electrode. We determine the discharge characteristics (i.e., the DC-current-to-DC-voltage relationship) of this decoupled thruster as well as a model for the interaction between the ionization and acceleration stages: we find that the former takes the same functional form as the analytical solution for space-charge limited current in a thin collisional ion channel, whereas the latter is determined primarily by the power draw of the DBD ionization stage. We present a complete model for the thrust and power draw of decoupled EAD thrusters, enabling their quantitative design and optimization for use in aircraft propulsion and other applications.

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“…PIV also has some disadvantages such as the complex implementation process, indispensable professional skills, selection of tracer particles and setting its size and concentration, and complex post-processing of the acquired images, which reduce its operability, especially for beginners. PIV is mostly used to study the mechanism of ionic wind flow [75,77,101,102]. In addition, it was reported that some scholars used Pitot tube [23,76] and laser Doppler velocimetry (LDV) [103] to measure the ionic wind velocity.…”

Section: Thermal Managementmentioning

confidence: 99%

A review on recent advances and challenges of ionic wind produced by corona discharges with practical applications

Qu¹,

Zeng²,

Zhang³

et al. 2021

J. Phys. D: Appl. Phys.

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Ionic wind, an induced phenomenon during corona discharge, possessing the features of silent operation and no moving parts, has a wide range of applications. Ionic wind generation is accompanied by complex physical processes, involving gas ionization, ion recombination, flow, and various chemical reactions, as well as mutual couplings between some of them. Therefore, understanding the corona discharge process and ionic wind generation is crucial for researchers and engineers to better utilize this phenomenon in practical applications. In this review, the principles of corona discharge and its induced ionic wind are presented. Subsequently, ionic wind generators (IWGs) are discussed according to their applications, and the corresponding advances based on experimental studies and numerical simulations are also reviewed. Moreover, the challenges of transitioning the ionic wind technology from laboratory studies to practical applications are discussed. These challenges include the excessively high onset voltage of the corona, ozone emission, and influence of environmental conditions. Furthermore, the mechanisms of these barriers and several effective approaches for mitigating them are provided. Finally, some future research prospects and the conclusions are presented.

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Electric wind generation by nanosecond repetitively pulsed microplasmas

Cited by 16 publications

References 49 publications

Empirical relations for discharge current and momentum injection in dielectric barrier discharge plasma actuators

Empirical relations for discharge current and momentum injection in dielectric barrier discharge plasma actuators

Performance of decoupled electroaerodynamic thrusters

A review on recent advances and challenges of ionic wind produced by corona discharges with practical applications

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