Vizualization of 3D non-stationary flow in shock tube using nanosecond volume discharge

Znamenskaya, I. A.; Mursenkova, I. V.; Kuli-Zade, T.A.; Kolycheva, A.N.

doi:10.1007/978-3-540-85168-4_85

Cited by 2 publications

(4 citation statements)

References 1 publication

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“…The spatial distribution of radiation provides information about the instantaneous density distribution in the region of the discharge radiation (in terms of gas dynamics). So, the glow of a pulsed surface sliding discharge in a boundary layer of a uniform supersonic flow clearly visualizes its structure and the region of a laminar -turbulent transition at a certain distance from the shock wave front [13].…”

Section: Discharge Radiation Under the Interaction Of An Oblique Shocmentioning

confidence: 99%

“…Increased conductivity in areas of low density can lead to a change in the geometry of the current of a pulsed surface sliding discharge [17]. The excitation of electron levels of molecules by electrons leads to an increased intensity of radiation from low-density regions of the flow, hence visualizing them [12,13,17]. The spatial distribution of radiation provides information about the instantaneous density distribution in the region of the discharge radiation (in terms of gas dynamics).…”

Section: Discharge Radiation Under the Interaction Of An Oblique Shocmentioning

confidence: 99%

“…Surface sliding discharge glow can visualize a laminar and turbulent boundary layer [12]. The short duration of nanosecond discharges (~ 100 ns) makes it possible to use the registration of radiation to visualize the structure of unsteady supersonic plane [12] and three-dimensional flows [13]. The radiation of glow-type discharges with a duration of more than one millisecond is mainly used to visualize the structure of stationary flows [10,14].…”

Section: Introductionmentioning

confidence: 99%

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Visualization of the interaction region of an oblique shock wave with a boundary layer by the radiation of a nanosecond surface sliding discharge

Mursenkova¹,

Sazonov²,

Liao³

et al. 2019

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The spatial structure of radiation of a surface sliding discharge with a duration of ~ 300 ns (plasma sheet) in inhomogeneous supersonic air flows including oblique shock wave in a discharge chamber of shock tube was experimentally investigated. The flows were created behind plane shock waves with Mach numbers 2.8-4.2; flow Mach numbers were 1.30-1.60. The flow in the discharge chamber included an oblique shock wave generated by the interaction of a supersonic flow with a small obstacle, and then reflected from the upper wall of the discharge chamber. In this case, the shock wave interacted with the boundary layer of the supersonic flow, which formed on the streamlined wall. A surface sliding discharge with a length of 100 mm and 30 mm wide was initiated on a streamlined surface at a certain moment in time. The discharge current, emission spectra, and spatial characteristics of the radiation under various conditions of discharge initiation were obtained and analyzed in experiments. The time dependence of geometry of the discharge glow region was obtained by digital processing of discharge images in flows. CFD simulation was performed to determine the shock-wave structure of the flow in the channel with an obstacle under experimental conditions. The comparison of experimental data with the results of numerical calculation of the supersonic flow field was done. It was shown that the spatial distribution of radiation from a surface sliding discharge visualizes the low density areas and the separation zone formed under the interaction of an oblique shock wave with a boundary layer.

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Section: Discharge Radiation Under the Interaction Of An Oblique Shocmentioning

confidence: 99%

Section: Discharge Radiation Under the Interaction Of An Oblique Shocmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Visualization of the interaction region of an oblique shock wave with a boundary layer by the radiation of a nanosecond surface sliding discharge

Mursenkova¹,

Sazonov²,

Liao³

et al. 2019

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“…Pulse-distributed surface «sliding» discharge (surface discharge with solid dielectric) of nanosecond duration (plasma sheet) can be used as a plasma actuator to affect flow [25][26][27][28][29]. It consists of surface-sliding dielectric channels (streamers, Figure 5), forming a plasma layer comparable in thickness to the boundary layer of supersonic flow (~0.5 mm).…”

Section: Pulsed Nanosecond Surface Dischargesmentioning

confidence: 99%

Computational and Experimental Modeling in Magnetoplasma Aerodynamics and High-Speed Gas and Plasma Flows (A Review)

2023

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This paper provides an overview of modern research on magnetoplasma methods of influencing gas-dynamic and plasma flows. The main physical mechanisms that control the interaction of plasma discharges with gaseous moving media are indicated. The ways of organizing pulsed energy input, characteristic of plasma aerodynamics, are briefly described: linearly stabilized discharge, magnetoplasma compressor, capillary discharge, laser-microwave action, electron beam action, nanosecond surface barrier discharges, pulsed spark discharges, and nanosecond optical discharges. A description of the physical mechanism of heating the gas-plasma flow at high values of electric fields, which are realized in high-current and nanosecond (ultrafast heating) electric discharges, is performed. Methods for magnetoplasma control of the configuration and gas-dynamic characteristics of shock waves arising in front of promising and advanced aircraft (AA) are described. Approaches to the control of quasi-stationary separated flows, laminar–turbulent transitions, and static and dynamic separation of the boundary layer (for large PA angles of attack) are presented.

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Vizualization of 3D non-stationary flow in shock tube using nanosecond volume discharge

Cited by 2 publications

References 1 publication

Visualization of the interaction region of an oblique shock wave with a boundary layer by the radiation of a nanosecond surface sliding discharge

Visualization of the interaction region of an oblique shock wave with a boundary layer by the radiation of a nanosecond surface sliding discharge

Computational and Experimental Modeling in Magnetoplasma Aerodynamics and High-Speed Gas and Plasma Flows (A Review)

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