Ionic wind produced by positive and negative corona discharges in air

Moreau, Éric; Audier, Pierre; Bénard, Nicolas

doi:10.1016/j.elstat.2018.03.009

Cited by 77 publications

(48 citation statements)

References 39 publications

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“…In this subsection, we show the PIV results and further explain the obtained velocity fields. Figure 5 shows the time-averaged velocity magnitude U and streamlines of the vector field in the XY (Figure 5 produced by applying a voltage of 16 kV across a 25 mm gap distance in a pin to plane geometry using the same PIV method and setup as in this work (Moreau et al 2018).…”

Section: Flow Fieldsmentioning

confidence: 99%

Electric wind generation by nanosecond repetitively pulsed microplasmas

Orrière¹,

Moreau²,

Pai³

2019

J. Phys. D: Appl. Phys.

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A nanosecond repetitively pulsed microplasma generated between two tungsten electrodes in a pin-to-pin configuration is used as a supply of charged species to produce an electrohydrodynamic phenomenon when placed near a DCbiased electrode. We employed high-frequency particle image velocimetry in order to study the produced flow. The generated flow velocities are around 2 m s −1 with a deposited average power on the order of 1 W. The main characteristics of this flow and the impact of the frequency and the DC field are discussed. In the end, we further explain the impact of each microplasma event on flow modification.

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Section: Flow Fieldsmentioning

confidence: 99%

Electric wind generation by nanosecond repetitively pulsed microplasmas

Orrière¹,

Moreau²,

Pai³

2019

J. Phys. D: Appl. Phys.

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“…The method adopted is an approach to fundamental physics calculations on ordinary electrical circuit [6], namely the capacitance of the electrode circuit. In this method, it is necessary to carry out further analysis regarding the multiplication factor k obtained because the corona discharge event occurs due to physical phenomena such as electrohydrodynamic [7], ionic wind phenomenon [8], and so on. Research on the effect of size shapes also requires to be done to observe its effect on determining the value of k. In addition, further analysis of the discharge spread visualization and simulation is also important for the value.…”

Section: Multiplication Factormentioning

confidence: 99%

“…The value of the electric current generated in the corona discharge is very large compared to the value of the electric current in an ordinary electric circuit [6]. This is due to various circumstances in the corona discharge such as electrohydrodynamic (EHD) [7], ionic wind phenomena [8], electrostatic precipitation [9], convective heat transfer [10], and so on. The number of circumstances occurring in the corona discharge makes it difficult to formulate the value of electric current as a function of voltage in order to obtain the precise value of the electric current.…”

Section: Introductionmentioning

confidence: 99%

Comparison of I-V Curves Between the Experiment of Corona Discharge on Gradient Line-To-Plane (GL-P) Configuration and The Mathematical Approach

et al. 2021

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Research has been conducted on the comparison of the I-V characteristic curve between mathematical study and experiment of the generation of negative DC corona discharge in the Gradient Line-to-Plane (GL-P) electrode configuration. The reason for this research is to calculate the suitability of the corona discharge electrical current between the mathematical and experimental study. The active electrode used has length 2 cm and height 4 cm. This research is conducted with variations in the sharpness angle of the active electrode (θ) 300, 450, and 600 and variations in the distance between the electrodes () 2 cm, 3 cm, and 4 cm. The mathematical formulation of the value of the corona discharge electrical current in the configuration of the GL-P electrode is obtained by using the geometric concept approach, which is the formulation of the capacitance value of the ordinary electrical circuit, with the addition of the multiplication factor value k in the sharp area of the active electrode, because in that area the greatest plasma flow distance is obtained. The value of the multiplication factor is obtained by fitting the curve between mathematical study and experiments. The I-V curve between the mathematical study and the corona discharge generation experiment has a high degree of similarity with the smallest percentage contacting point of 37.50%.The value of the multiplication factor is influenced by the sharpness angle of the active electrode shape and the distance between the electrodes.

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“…The greatest feature of an EHD pump is no moving parts such that EHD pumps can be small form factor, low profile, simple configuration, silent, vibration-free, and low power consumption. The performance of an EHD pump is governed by the factors that affect the characteristics of the electric field around the corona electrode, including the physical and electrical factors like geometry/configuration [65][66][67][68], electrode material [69,70], voltage [67,71], current [64,72], and polarity [66,73].…”

Section: Reciprocatingmentioning

confidence: 99%

Recent Developments in Air Pumps for Thermal Management of Electronics

Wen

2021

Journal of Electronic Packaging

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For electronics, poor thermal management could cause severe mechanical and electrical failures. Forced convective air cooling, i.e., flowing air over a hot surface, is one of the most efficient and economical solutions to manage thermal issues of electronics. Air pump is used to initiate and sustain airflow required in forced convection. This paper reviews both the mechanical and the nonmechanical air pumps that have been using widely in current electronics or have a great potential in future electronics. The mechanical pumps include axial fans, blowers, beam fans, and diaphragm pumps, while the nonmechanical pump specifically focuses on electrohydrodynamic pumps. This paper presents the working principle first and then the recent developments, including the pump itself (design, characteristics, etc.) and the applications in thermal management (placement, integration, etc.). In the end, this paper conducts the strength analysis (flow rate, pressure, noise, flexibility, and reliability) among the reviewed five types of air pumps.

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Ionic wind produced by positive and negative corona discharges in air

Cited by 77 publications

References 39 publications

Electric wind generation by nanosecond repetitively pulsed microplasmas

Electric wind generation by nanosecond repetitively pulsed microplasmas

Comparison of I-V Curves Between the Experiment of Corona Discharge on Gradient Line-To-Plane (GL-P) Configuration and The Mathematical Approach

Recent Developments in Air Pumps for Thermal Management of Electronics

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