Numerical Simulation of Non-Equilibrium Plasma Discharge for High Speed Flow Control

Balasubramanian, R.; Anandhanarayanan, K.; Krishnamurthy, R.; Chakraborty, Debasis

doi:10.1007/s40032-016-0314-1

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…In the Cartesian coordinate system, the two-temperature thermomechanical model proposed in 1989 and the seven-component air chemical reaction model are considered [36]. The turbulent flow field around a hypersonic aircraft is given as follows [37][38][39]:…”

Section: Modeling Of Plasma Sheathmentioning

confidence: 99%

Evolution of Airy Beams in Turbulence Plasma Sheath

Gao,

Han,

Wang

et al. 2024

Photonics

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In order to study the transmission characteristics of Airy beams in the plasma sheath, the flow field around a hypersonic vehicle was numerically simulated and analyzed based on the Navier–Stokes (N-S) equation and a turbulence model. Then, according to the characteristics of the thickness of the plasma flow field around the supersonic vehicle at the centimeter level, the double fast Fourier transform (D-FFT) algorithm and multi-random phase screens theory were used to predict the propagation characteristics of the Airy beams in the turbulent plasma sheath. The results show that the lower the height and the higher the speed, the smaller the thickness of the plasma sheath shock layer. The refractive index variation in the sheath shock layer has a significant influence on Airy beam transmission. At the same time, the transmission distance and the attenuation factor of the Airy beams also change the transmission quality of the Airy beams. The larger the attenuation factor, the smaller the drift, and the standard deviation decreases with an increase in the refractive index. Airy beams have smaller drifts compared to Gaussian beams and have advantages in suppressing turbulence.

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Section: Modeling Of Plasma Sheathmentioning

confidence: 99%

Evolution of Airy Beams in Turbulence Plasma Sheath

Gao,

Han,

Wang

et al. 2024

Photonics

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“…In the Cartesian coordinates, the three-dimensional Navier-Stokes (N-S) equations with the appropriate closure models, including thermochemical non-equilibrium, can be written as [36][37][38][39][40] ∂ 𝑄 ∂t…”

Section: Modeling Of Plasma Sheathmentioning

confidence: 99%

“…However, it shows a special dominant effect for index of refraction in the ionized gas mixture. [39] The dependence of the index of refractive on electron density is completely different from that on neutral density. According to Alpher and White's point of view, [45] the index-of-refractive difference n − 1 of electrons in the ionized gas mixture is at least 10 times greater than that of each atom.…”

Section: Relationship Between Index Of Refractive and Density Of Plasmamentioning

confidence: 99%

Light propagation characteristics of turbulent plasma sheath surrounding the hypersonic aerocraft*

Cui

Han

2019

Chinese Phys. B

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The characteristics of light propagation through turbulent plasma sheath surrounding the hypersonic aircraft have been studied. The turbulent flow fields around a hypersonic aircraft are given by using the Navier–Stokes (NS) equations and k–ε turbulence model. Based on the distribution of flow field, refractive index and density of the plasma sheath for a blunt cone are discussed with different flight velocities and altitudes. The refractive index is mainly influenced by the electrons in the turbulent plasma sheath. The influence of different velocities and altitudes on the features of light propagation in the turbulent plasma sheath is analyzed. The results show that as the flight speed increases or the flight altitude decreases, the refractive index fluctuation becomes larger. It is also found that the refractive index fluctuation varies with the incident wavelength. This study shows how the characteristics of an optical beam propagating through plasma sheath are affected by the incident wavelength, flight velocities, and altitudes.

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