Near-Surface Electrical Discharge in Supersonic Airflow: Properties and Flow Control

Leonov, Sergey B.; Yarantsev, Dmitry

doi:10.2514/1.24585

Cited by 152 publications

(59 citation statements)

References 2 publications

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“…Plasma of electrical discharge appears in more or less homogeneous form at relatively low gas pressure [1,4] limiting the ¦eld of application. At the same time the e¨ectiveness of nonuniform plasma is demonstrated at higher gas density [5,6], which is typical for practical aerodynamics. The e¨ect of arti¦cial §ow separation behind discharge zone over a plane wall was found out and described in details at the ¦rst time [6].…”

Section: Introductionmentioning

confidence: 78%

“…At the same time the e¨ectiveness of nonuniform plasma is demonstrated at higher gas density [5,6], which is typical for practical aerodynamics. The e¨ect of arti¦cial §ow separation behind discharge zone over a plane wall was found out and described in details at the ¦rst time [6].…”

Section: Introductionmentioning

confidence: 78%

“…The test was performed in facility PWT-50 of JIHT RAS [5,6,8]. Incoming §ow in duct with initial height Y 0 = 60 mm and width Z 0 = 72 mm has initial Mach number M = 2 and 2.5 and static air pressure P st = 100 300 Torr.…”

Section: Experimental Approachmentioning

confidence: 99%

“…The idea of using plasma with strong spatial nonuniformity, nonequilibrium composition, and unsteady temporal behavior gives chance to get a notable e¨ect at technically reasonable level of power release. It was shown experimentally that the discharge in air demonstrates some advantage for shocks position control in duct-driven supersonic §ow [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…There was shown that generation of surface localized discharges in a high-speed §ow makes possible substantial change of the structure and parameters of §ow¦eld. One of possible ¦elds for a practical interest is the plasma steering e¨ect in high-speed inlet con¦guration [5,6]. Comparing with mechanical one, the method of high-speed §ow control based on plasma deposition possesses, at least, two advantages: inertialess and §exibility (electronic control of magnitude and location of plasma impact).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Flow control in a supersonic inlet model by electrical discharge

Leonov

Yarantsev

Falempin

2012

Progress in Flight Physics

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This paper reports the results of experimental work on supersonic Flow Control by Weakly-Ionized Plasma. Particular objective of this activity is to demonstrate the steering e¨ect of near-surface electrical discharge on supersonic §ow structure in a model two-dimensional (2D) aerodynamic con¦guration with three-shock compression ramp. The experiments were arranged in lab-scale facility PWT-50 of JIHT RAS at connected pipe §ow pattern. At rather sophisticated character of plasma §ow interaction, such a technique can be considered as a feasible method for accurate control of shocks position and angle in supersonic inlet.

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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 78%

Section: Experimental Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Flow control in a supersonic inlet model by electrical discharge

Leonov

Yarantsev

Falempin

2012

Progress in Flight Physics

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Plasma Dynamics and Flow Control Applications

Adamovich

2010

Encyclopedia of Aerospace Engineering

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Over the last decade, there has been considerable interest in the use of plasmas generated over high‐speed vehicles for flow control and energy management. Plasma flow control does not use moving parts, and can be turned on and off on a very short time scale. In laboratory experiments, thermal plasmas, laser‐induced breakdown, as well as various types of surface and volume‐filling electric discharge plasmas, have been widely used to modify both subsonic and supersonic flows. Potential plasma flow control applications include drag reduction, boundary layer separation and transition control, mixing enhancement, shock wave modification, wave drag reduction, and on‐board electrical power generation. Primary mechanisms of plasma flow control include magnetohydrodynamic (MHD) and electrohydrodynamic (EHD) interactions, as well as thermal methods using Joule heating of the flow. This article provides a brief overview of the main concepts and methods of plasma flow control.

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Influence of ambient pressure on the performance of an arc discharge plasma actuator

Tian

Jin

Guo

et al. 2018

Contributions to Plasma Physics

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The arc discharge plasma actuator (ADPA) has wide application prospects in high-speed flow control because of its local heating effect and strong disturbance. In this paper, the influence of ambient pressure, which ranges from 3 to 20 kPa, on the performance of a two-electrode ADPA is investigated by a schlieren system. The duration of the arc heated region, as well as its area, is extracted by image processing. As the ambient pressure increases, different flow field evolutions occur. The duration of the ADPA heated region increases with the ambient pressure. The maximum duration reaches 1185.3 μs at 20 kPa. The velocity of the discharge-induced blast shock wave first decreases gradually and then remains at 345 m/s for all air pressures. The blast shock wave has a higher velocity at lower pressures when it is freshly produced. A maximum blast shock wave velocity of 582 m/s is observed at the pressure of 7 kPa. The arc heated region is not sensitive to ambient pressure, but the deposited energy from the arc increases when the pressure increases. KEYWORDS ambient pressure, arc discharge plasma actuator, performance, schlieren method 1

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Near-Surface Electrical Discharge in Supersonic Airflow: Properties and Flow Control

Cited by 152 publications

References 2 publications

Flow control in a supersonic inlet model by electrical discharge

Flow control in a supersonic inlet model by electrical discharge

Plasma Dynamics and Flow Control Applications

Influence of ambient pressure on the performance of an arc discharge plasma actuator

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