Analysis of the Liner Stability in Various Experiments

Buyko, A.M.; Garanin, S. F.; Karmishin, D. V.; Mokhov, V.N.; Sokolova, N. V.; Yakubov, V.B.; Zmushko, V.V.

doi:10.1109/tps.2007.908905

Cited by 17 publications

(7 citation statements)

References 5 publications

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“…In the calculations, initial perturbations with a magnitude determined by the resolution of the grid used in the numerical calculations Δ were considered random. The theoretical arguments given in [9] show that the error arising in this case is insignificant. Actually, the error will be insignificant if the grid resolution (and, hence, the perturbation size) is sufficiently low.…”

Section: Two-dimensional Mhd Simulation Of Perturbation Growthmentioning

confidence: 79%

“…A comparison of the calculated shape of the liner outer surface for the HF and LD experiments shows that, in the calculations, just as in the experiments, the HF liner remains slightly deformed and LD liner is severely deformed. Figure 1 gives the calculation results for the liners obtained in [9]. In the LD and NTLX experiments, the shapes of the outer surface of the liners remain qualitatively similar and highly perturbed even when using a maximally fine grid.…”

Section: Introductionmentioning

confidence: 96%

“…Investigation of liner instability in the experiments by two-dimensional calculations and estimations [4,8,9] has shown that a theoretical explanation of the different behavior of liners in these experiments is a difficult problem and even a small difference in the formulation of the problem can have a significant influence on calculation results. Nevertheless, direct two-dimensional numerical magnetohydrodynamic (MHD) calculations of perturbation growth [9] have shown that the conditions of the HF and NTLX experiments lead to a smaller perturbation growths than the conditions of the LD experiments if this growth is determined from the degree of perturbation growth on the inner surface.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, direct two-dimensional numerical magnetohydrodynamic (MHD) calculations of perturbation growth [9] have shown that the conditions of the HF and NTLX experiments lead to a smaller perturbation growths than the conditions of the LD experiments if this growth is determined from the degree of perturbation growth on the inner surface. A comparison of the calculated shape of the liner outer surface for the HF and LD experiments shows that, in the calculations, just as in the experiments, the HF liner remains slightly deformed and LD liner is severely deformed.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On stabilization of implosion of condensed liners

Buiko¹,

Garanin²,

Zmushko³

et al. 2009

J Appl Mech Tech Phy

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This paper considers various experimental designs on the Atlas facility to study the physics of liners and determine the optimum conditions of their stable motion. In one of the versions, in comparison with the Liner Demonstration series of experiments, in which unstable liner motion was observed, it is proposed to reduce the initial liner radius without changing its mass, which, according to twodimensional calculations, should to lead to more stable motion of the liner with unchanged velocity. It is also proposed to perform an experiment in which periodic perturbations at a certain wavelength are created on the outer surface of the liner with a simultaneous increase in its thickness. According to calculations, the growth of chaotic perturbations is stabilized in this case with the preservation of the liner velocity.

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Section: Two-dimensional Mhd Simulation Of Perturbation Growthmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On stabilization of implosion of condensed liners

Buiko¹,

Garanin²,

Zmushko³

et al. 2009

J Appl Mech Tech Phy

View full text Add to dashboard Cite

show abstract

“…Nonthermal plasmas are produced by some devices such as glow, corona, APPJ [6], DBD [7], MHCD [1], etc. Because the ions and the neutrals remain relatively cold, this characteristic provides the possibility of using cold plasmas for low temperature plasma chemistry and for the treatment of heat sensitive materials including polymers and biological tissues.…”

Section: Introductionmentioning

confidence: 99%

Electrical Parameters Investigation and Zero Flow Rate Effect of Nitrogen Atmospheric Nonthermal Plasma Jet

Allam¹,

Ward²,

El-Sayed³

et al. 2014

EPE

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The construction and operation of atmospheric nonthermal plasma jet, ANPJ, are presented in this work as well as the experimental investigations of its electrical parameters, the configuration of plasma jet column and its temperature. The device is energized by a low-cost Neon power supply of (10 kV, 30 mA, and 20 kHz) and the discharge takes place by using N2 gas with different flow rates from 3 to 25 L/min and input voltage of 6 kV. Diagnostic techniques such as voltage divider, Lissajous figure, image processing and thermometer are used. The electrical characteristics of discharge at different flow rates of N2 gas such as discharge voltage, current, mean power, power efficiency, and mean energy have been studied. The experimental results show that the maximum plasma jet length of 14 mm is detected at flow rate of 12 L/min. The results of plasma jet (heavy particles) temperature along the jet length show that jet plasma has approximately a room temperature at the jet column end. The results of zero flow rate effect on the ANPJ operation show damage in the Teflon insulator and a corrosion in the Aluminum electrodes.

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Examining the Role of Ozone in Surface Plasma Sterilization Using Dielectric Barrier Discharge (DBD) Plasma

Mastanaiah

Banerjee

Johnson

et al. 2013

Plasma Processes & Polymers

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Dielectric barrier discharge (DBD) devices are known ozone generators. Authors have previously demonstrated a DBD surface plasma source, operating in air at atmospheric pressure, to achieve killing of vegetative cells in 2-3 min and sterilization in 20 min (bacterial spores). The aim of this paper is to examine the role of the ozone in surface DBD plasma sterilization. The role of ozone in plasma killing is examined by a) characterizing the rate of production/decay of ozone during DBD plasma generation, b) studying the effect of exposing bacteria (Escherichia coli) solely to the ozone thus produced. Our results indicate that while ozone plays a major role, the energy flux delivered to the electrodes is also crucial in the process of plasma sterilization.

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Analysis of the Liner Stability in Various Experiments

Cited by 17 publications

References 5 publications

On stabilization of implosion of condensed liners

On stabilization of implosion of condensed liners

Electrical Parameters Investigation and Zero Flow Rate Effect of Nitrogen Atmospheric Nonthermal Plasma Jet

Examining the Role of Ozone in Surface Plasma Sterilization Using Dielectric Barrier Discharge (DBD) Plasma

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