Development of gas-dynamic perturbations propagating from a distributed sliding surface discharge

Znamenskaya, I. A.; Latfullin, D. F.; Lutsky, A E; Mursenkova, I. V.; Sysoev, N. N.

doi:10.1134/s1063784207050027

Cited by 29 publications

(29 citation statements)

References 1 publication

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“…The calculated results obtained in this work and shown in figure 17 agree qualitatively with the results obtained in [16], from the analysis of their observations in a sliding nanosecond high-voltage discharge in air at 100 Torr. Here the total fractional electron power transferred into heat was 40% at 100 Torr, whereas the reduced electric field was in the range 100-500 Td.…”

Section: Comparison With Other Calculations and Experimentssupporting

confidence: 88%

“…Recent observations in nanosecond high-voltage discharge research [15][16][17][18][19] have shown that fast gas heating may be efficient even at E/N > 300 Td. At this extreme, the electron energy fraction spent on excitation and dissociation of the molecules decreases with the electric field, and most of the electron energy is spent on electron-impact ionization.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, there have only been a few experimental attempts to investigate the process in high reduced electrical fields. Indeed, it has been shown in [16] that 40 ± 10% of the total input energy in nanosecond air discharges is spent on fast gas heating. However, no electric field and plasma energy distribution measurements were carried out in this work.…”

Section: Introductionmentioning

confidence: 99%

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Mechanism of ultra-fast heating in a non-equilibrium weakly ionized air discharge plasma in high electric fields

Aleksandrov¹,

Kindysheva²,

Nudnova³

et al. 2010

J. Phys. D: Appl. Phys.

222

228

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Observations of a shock wave propagating through a decaying plasma in the afterglow of an impulse high-voltage nanosecond discharge and of a surface dielectric barrier discharge in the nanosecond range were analysed to determine the electron power transferred into heat in air plasmas in high electric fields. It was shown that approximately half of the discharge power can go to heat for a short (∼1 µs at atmospheric pressure) period of time when reduced electric fields are present at approximately 103 Td. A kinetic model was developed to describe the processes that contribute towards the fast transfer of electron energy into thermal energy under the conditions considered. This model takes into account previously suggested mechanisms to describe observations of fast heating in moderate (∼102 Td) reduced electric fields and also considers the processes that become important in the presence of high electric fields. Calculations based on the developed model agree qualitatively with analyses of high-voltage nanosecond discharge observations.

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Section: Comparison With Other Calculations and Experimentssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanism of ultra-fast heating in a non-equilibrium weakly ionized air discharge plasma in high electric fields

Aleksandrov¹,

Kindysheva²,

Nudnova³

et al. 2010

J. Phys. D: Appl. Phys.

222

228

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“…In experiments [137][138][139], fast (at times less than 1 μs) heating of air upon initiation of a nanosecond gliding surface discharge was investigated. Based on the processing of the measurement results, it was concluded that the fraction of the discharge energy that quickly turns into heat increases with an increase in pressure from 25 to 230 Torr from about 15 to 60%.…”

Section: Fast Heating Of Air In a Strong Electric Fieldmentioning

confidence: 99%

Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma

Starikovskiy

Aleksandrov

2021

Plasma Phys. Rep.

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Abstract— The paper presents a review of modern works on gasdynamic flow control using a highly nonequilibrium pulsed plasma. The main attention is paid to the effects based on ultrafast (on the nanosecond time scale for atmospheric pressure) local gas heating, since, at present, the main successes in controlling high-speed flows by means of gas discharges are associated with this thermal mechanism. Attention is paid to the physical mechanisms responsible for the interaction of the discharge with gas flows. The first part of the review outlines the most popular approaches for pulsed energy deposition in plasma aerodynamics: nanosecond surface barrier discharges, pulsed spark discharges, and femto- and nanosecond optical discharges. The mechanisms of ultrafast heating of air at high electric fields realized in these discharges, as well as during the decay of the discharge plasma, are analyzed separately. The second part of the review gives numerous examples of plasma-assisted control of gasdynamic flows. It considers control of the configuration of shock waves in front of a supersonic object, control of its trajectory, control of quasi-stationary separated flows and layers, control of a laminar–turbulent transition, and control of static and dynamic separation of the boundary layer at high angles of attack, as well as issues of the operation of plasma actuators in different weather conditions and the use of plasma for the de-icing of a flying object.

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“…Due to the short duration of the discharge and the spatial inhomogeneity of the plasma, only a few experiments on the efficiency of fast heating processes were conducted in high reduced electric fields (E/N > 80 Td). Recent investigations on ultra-fast heating provided by non-equilibrium discharges showed that between (25 ± 10)% and (75 ± 25)% [23,31] of the total energy input in nanosecond air discharges is transferred to gas heating, between 20 up to 3000 ns after the discharge. However, these experimental investigations were focused on much shorter time scales than relevant for the acoustic investigations presented in this work (≈ 1 ms).…”

Section: Sound Generation From Compact Sources In Chemically Reactingmentioning

confidence: 99%

Low-frequency sound generation by modulated repetitively pulsed nanosecond plasma discharges

Bölke¹,

Lacoste²,

Moeck³

2018

J. Phys. D: Appl. Phys.

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The acoustic source amplitude of low-frequency modulated spark discharges is determined experimentally. Burst and pulse-density modulation are utilized in order to generate source components at frequencies much lower than the pulse repetition frequency. Pulse sequences consist of high-voltage pulses with 10 ns duration, 9 to 12 kV amplitude, and pulse repetition frequencies up to 30 kHz. The source amplitude is experimentally determined by microphone measurements in an impedance tube. Spurious components in the measured pressure signals, associated with electromagnetic noise from the high-voltage discharges, are removed by appropriate data processing. The Fourier component of the electric power at the modulation frequency is determined by phase-averaged pulse energy measurements, and the relation between electric power and sound source amplitude is revealed. The effect of pulse energy, electrode gap distance, and the number of pulses per modulation period on the initialization phase, during which HV-pulses do not generate sparks, is determined. An analytical model based on sound generation by unsteady heating is employed to estimate the acoustic source amplitude from the electrical power input; good overall agreement with the measured source amplitudes is observed. The sound generated by low-frequency modulated NRP discharges in the present work, with modulation frequencies in the range of 50-1000 Hz, can be predicted well by assuming that the entire electrical power acts as unsteady heating over the relevant timescales.

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Development of gas-dynamic perturbations propagating from a distributed sliding surface discharge

Cited by 29 publications

References 1 publication

Mechanism of ultra-fast heating in a non-equilibrium weakly ionized air discharge plasma in high electric fields

Mechanism of ultra-fast heating in a non-equilibrium weakly ionized air discharge plasma in high electric fields

Gasdynamic Flow Control by Ultrafast Local Heating in a Strongly Nonequilibrium Pulsed Plasma

Low-frequency sound generation by modulated repetitively pulsed nanosecond plasma discharges

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