Local acoustic shock velocity and shock structure recovery measurements in glow discharges

Bletzinger, P.; Ganguly, Biswa

doi:10.1016/s0375-9601(99)00386-2

Cited by 40 publications

(19 citation statements)

References 7 publications

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“…One can see that there is invisible SW front near plasma jet axis, Fig.10. So, it is possible to do some mistakes of the correct SW velocity measurement in cluster plasmoid by the shadow method [9,10]. It is very important conclusion.…”

Section: Discussionmentioning

confidence: 99%

Shock wave propagation through non-equilibrium cluster plasma

Klimov

Bityurin²,

Charitonov³

et al. 2002

40th AIAA Aerospace Sciences Meeting &Amp; Exhibit

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Section: Discussionmentioning

confidence: 99%

Shock wave propagation through non-equilibrium cluster plasma

Klimov

Bityurin²,

Charitonov³

et al. 2002

40th AIAA Aerospace Sciences Meeting &Amp; Exhibit

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“…This is not seen yet during the initial times of the shock inside the plasma cloud (first few curves in Figs. [3][4][5] but at later times of interaction the contribution of the energy cumulation effect starts to prevail.…”

Section: -5 a Markhotokmentioning

confidence: 99%

The cumulative energy effect for improved ignition timing

Markhotok

2015

Physics of Plasmas

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A technique capable of improving timing in ignition applications is proposed. It is based on the use of shock waves propagating in a specific medium that allows achieving extremely high speeds and energies. The model uses the energy cumulation effect in the presence of the shock wave refraction on an interface with plasma. The problem was solved analytically and the effects were demonstrated for a cylindrically symmetrical geometry. Numerical results show very quick and uneven acceleration of different portions of the shock front. Its strong distortions lead to formation of a sharply focused jet near the axis of symmetry. The ability of the shock to achieve extremely high speeds and energies can be useful in design of efficient combustors for hypersonic systems, and possibly offers an alternative way of construction of a nuclear fusion reactor. Recommendations are given in terms of adjustment parameters and can be applied at any problem scale and for various combinations of the strengths of the effects involved in the problem. V C 2015 AIP Publishing LLC. [http://dx.

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“…[11][12][13][14] Specifically, in high-speed flows, several experimental studies have demonstrated the influence of the plasma on shock wave. [15][16][17][18] Many of these investigations have been performed with shock waves, generated by an electrically pulsed discharge, propagating along the low-pressure-unconstricted dc glow discharge. It has been observed that the creation of a double layer and associated gas heating caused by the propagating shock wave can increase the shock velocity and broaden its width.…”

Section: Introductionmentioning

confidence: 99%

Influence of shock wave propagation on dielectric barrier discharge plasma actuator performance

Erfani¹,

Zare‐Behtash²,

Kontis³

2012

J. Phys. D: Appl. Phys.

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Erfani, R., Zare-Behtash, H., and Kontis, K. (2012 AbstractInterest in plasma actuators as active flow control devices is growing rapidly due to their lack of mechanical parts, light weight, and high response frequency. Although the flow induced by these actuators has received much attention, the effect that the external flow has on the performance of the actuator itself must also be considered, specially the influence of unsteady high-speed flows which are fast becoming a norm in the operating flight envelopes. The primary objective of the current study is to examine the characteristics of a dielectric barrier discharge (DBD) plasma actuator when exposed to an unsteady flow generated by a shock tube. This type of flow, which is often used in different studies, contains a range of flow regimes from sudden pressure and density changes to relatively uniform high-speed flow regions. A small circular shock tube is employed along with the schlieren photography technique to visualise the flow. The voltage and current traces of the plasma actuator are monitored throughout, and using the well established shock tube theory the change in the actuator characteristics are related to the physical processes which occur inside the shock tube. The results show that not only is the shear layer outside of the shock tube affected by the plasma but the passage of the shock front and high-speed flow behind it also greatly influences the properties of the plasma.

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Local acoustic shock velocity and shock structure recovery measurements in glow discharges

Cited by 40 publications

References 7 publications

Shock wave propagation through non-equilibrium cluster plasma

Shock wave propagation through non-equilibrium cluster plasma

The cumulative energy effect for improved ignition timing

Influence of shock wave propagation on dielectric barrier discharge plasma actuator performance

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