Effect of Mach number on the efficiency of microwave energy deposition in supersonic flow

Lashkov, V. A.; Karpenko, A. G.; Khoronzhuk, R. S.; Mashek, I. Ch.

doi:10.1063/1.4949524

Cited by 21 publications

(22 citation statements)

References 19 publications

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“…From the experiment of Lashkov et al [12], which varied the size of an obstacle and the position of the discharge, it has been confirmed that a larger model is more influenced by the same microwave discharge. In subsequent studies [13], both numerical and experimental studies have shown that a decrease in the resistance, resulting from a microwave energy deposition, increases proportionally to the Mach number in the range from 1.6 to 8. Azarova et al [14] performed a numerical simulation to study the effects of symmetrical and asymmetrical deposition of microwave filament.…”

Section: Introductionmentioning

confidence: 96%

Influence of Laser Energy Deposition Conditions on the Drag of A Sphere in Supersonic Flow

Kim

Lee

2019

Energies

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In the present study, a two-dimensional axisymmetry unsteady numerical simulation that implements high-frequency laser energy deposition was performed to understand its influence on drag reduction in supersonic flow. The energy deposition was modeled as the increase of the temperature inside the focal region. The drag reduction characteristics were investigated by changing the frequency of the deposition, the distance between the focus of the deposition and the body, and the power of the laser. The results showed that drag could be reduced by 60% when there was a single energy deposition. As the operating frequency increased, up to 70% drag reduction was obtained. When the laser energy was deposed more frequently than 75 kHz, the normalized drag converged regardless of the deposition scenario, which resulted from the multiple interactions between the blast wave and the reflected shock. A similar tendency was found from the results of various focal distances. According to the results of this study on the effect of the deposition energy, it is expected to achieve the same effect as with low energy by increasing the frequency of the deposition.

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Section: Introductionmentioning

confidence: 96%

Influence of Laser Energy Deposition Conditions on the Drag of A Sphere in Supersonic Flow

Kim

Lee

2019

Energies

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“…Various types of plasma discharges have shown promising characteristics in different applications including flow control in aerodynamics [5][6][7], ignition and combustion in propulsion engineering [8][9][10][11][12][13], stabilization of flames [14][15][16][17]. Characteristic propane ignition and combustion times in the supersonic flow with Mach number 2 could be decreased up to factor 2-5 by plasma-assisted combustion [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…Characteristic propane ignition and combustion times in the supersonic flow with Mach number 2 could be decreased up to factor 2-5 by plasma-assisted combustion [8,9]. Influence of the energy input of a microwave discharge on shock-wave structures and the flow around a body in a supersonic flow and the optimal discharge parameters to achieve the aerodynamic effect are studied in [6,7]. A model of an initiated microwave discharge in a linearly polarized wave beam is considered in [18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Air Breakdown Induced by Subcritical Streamer Microwave Discharge

Булат

Esakov

Grachev

et al. 2021

IEEE Trans. Plasma Sci.

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Streamers are non-thermal filamentary plasmas developing in insulating mediums under the influence of strong external electric field. The subcritical streamer discharge is formed by a field with the intensity smaller than the minimum intensity leading to the air breakdown, and breakdown conditions are created by special initiators. Air breakdown in sub-and supersonic flows induced by the subcritical streamer discharge and the effect of the initiator shape on breakdown conditions are studied. The intensity of electric field of subcritical streamer induced breakdown has been shown to be smaller compared to that initiated by microwave discharge without initiator. The dependencies of critical intensity of the electric field on the pressure and location of initiator are reported. The air breakdown conditions are found at various dimensions of the metallic screen near which the initiator is installed.

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“…Проделанные эксперименты показали значительное влияние плазмы СВЧ разряда на параметры набегающего потока, и оптимальные условия для приложений исследуются в новых работах [9][10][11][12][13][14][15].…”

Section: Introductionunclassified

Распространение Одиночной Волны Давления По Области Разряда Микроволнового Диапазона Длин Волн В Воздухе При Средних Давлениях

Бычков¹,

Грачев²,

Есаков³

et al. 2021

Журнал Технической Физики

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Results of experiments on a propagation of a pressure wave with a shock-wave leading front through a gas region excited by a pulsed freely localized discharge of the microwave wavelength range are described. The discharge was realized in air at a pressure from 14 to 100 Torr in the focal region of a quasi-optical electromagnetic beam of the microwave wavelength range. The experiments revealed three types of interaction of the gas-dynamic pulse with the region excited by the discharge in the post-discharge mode. The specific type of interaction is defined by the initial structure of the discharge and the delay time of the gas-dynamic pulse passage through the excited region.

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Effect of Mach number on the efficiency of microwave energy deposition in supersonic flow

Cited by 21 publications

References 19 publications

Influence of Laser Energy Deposition Conditions on the Drag of A Sphere in Supersonic Flow

Influence of Laser Energy Deposition Conditions on the Drag of A Sphere in Supersonic Flow

Experimental Study of Air Breakdown Induced by Subcritical Streamer Microwave Discharge

Распространение Одиночной Волны Давления По Области Разряда Микроволнового Диапазона Длин Волн В Воздухе При Средних Давлениях

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