Optical emission study of plasma vortex rings at atmospheric pressure air

Volodin, L. Y.; Камруков, А. С.

doi:10.1088/1742-6596/1393/1/012063

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…Images were saved in the RAW format. Optical fiber (7) of the Solar S100 spectrometer (8) with flatfield correction was fixed under the split (9), and made it possible to control the current relative intensity and wavelength.…”

Section: Digital Camera Calibrationmentioning

confidence: 99%

“…Recent high-speed optical emission study of plasma vortex rings has shown that the emission spectrum of the vortex ring is maintained in time, and condensed Al2O3 particles are a gray body emitter [7]. Figure 3 shows the characteristic emission spectrum of a vortex ring and the channels spectral sensitivities of Canon 550D digital camera.…”

Section: Image Post-processingmentioning

confidence: 99%

“…In previous studies [7,8], the radiation spectrum of a plasma vortex was recorded and the effect of partial optical transparency of the radiation emerging from its volume was discovered. This work is a continuation of research and is aimed at studying the radiation-gas dynamic processes occurring in a plasma-vortex formation in various spectral ranges using the three-color image pyrometry method.…”

Section: Introductionmentioning

confidence: 99%

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Three-color pyrometry study of radiation and gas dynamic processes in a heterogeneous plasma-vortex ring

Volodin

2022

J. Phys.: Conf. Ser.

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The paper presents the results of a study of a heterogeneous plasma vortex ring using the three-color image pyrometry technique. The vortex ring is formed during deceleration of a supersonic pulsed aluminum plasma jet in atmospheric air. A technique for calibrating a digital camera and a post-processing process for images are proposed that makes it possible to visualize the internal structure of the vortex. As a result of the study, the effect of vortex separation of condensed and gas flow components was experimentally demonstrated.

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Section: Digital Camera Calibrationmentioning

confidence: 99%

Section: Image Post-processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Three-color pyrometry study of radiation and gas dynamic processes in a heterogeneous plasma-vortex ring

Volodin

2022

J. Phys.: Conf. Ser.

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“…Under these conditions, the plasma flow contains a condensed phase, that affects the main characteristics of vortices, in particular, their stability, afterglow time, optical characteristics etc. [8,9]. In the research [1] the plasma vortices were produced in less than half of the cases of discharge pulses.…”

Section: Introductionmentioning

confidence: 99%

Electric discharge generator of long-lived plasma formations in atmospheric pressure air

Volodin

Камруков

2022

J. Phys.: Conf. Ser.

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The paper presents the results of a study of the developed pulsed plasma generator based on the cylindrical foil electric explosion. The generator is used to form large-scale toroidal plasma vortices in atmospheric air. The influence of the specific stored energy on the phase composition of the plasma flow and the lifetime of plasmoids using a high-speed camera was studied. It was found that large condensed particles in the flow do not participate in the vortex motion and cause the destruction of plasma vortices. The formation conditions of stable plasma vortices were determined.

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Underwater electrical explosion of metallic wire and tube: A comparison study

Zhang,

et al. 2023

Physics of Plasmas

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With an initial energy storage of approximately 53.5 kJ, experiments on underwater electrical explosions of metallic wire and thin-wall tube were conducted. Two sets of controlled experiments were designed, and the wire and tube for each set were of the same length, cross-sectional area, and material. Load voltage, circuit current, and shock wave pressure were measured and analyzed, and electric power, energy deposition, and energy deposition rate were also calculated and investigated. Experimental results indicated that the underwater electrical tube explosion (UETE) always has higher and earlier local resistance peak, voltage peak, and electric power peak, as well as faster phase transition and ionization process than the underwater electrical wire explosion (UEWE). In addition, the energy deposition rate from the beginning of discharge or the decrease in current to the voltage peak is significantly increased when replacing a wire with a tube. For the shock-wave characteristics, the peak pressure, energy density, and impulse of the shock wave generated by UETE are greater than that generated by UEWE. The peak pressure at ∼33 cm increased from 21.1 to 24.5 MPa in the first set and from 18.1 to 21.7 MPa in the second when a tube was used instead of a wire. These experimental results help us understand the physical process of UETE and provide an alternative methodology for load design in industrial applications.

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Optical emission study of plasma vortex rings at atmospheric pressure air

Cited by 5 publications

References 9 publications

Three-color pyrometry study of radiation and gas dynamic processes in a heterogeneous plasma-vortex ring

Three-color pyrometry study of radiation and gas dynamic processes in a heterogeneous plasma-vortex ring

Electric discharge generator of long-lived plasma formations in atmospheric pressure air

Underwater electrical explosion of metallic wire and tube: A comparison study

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