Studies on the Effects of the Plasma Wake Flow Fields of Hypersonic Reentry Blunt Cone on Electromagnetic Wave
| Autor: | Shuangying Zhong, Song Liu, Yu-Xin Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Nuclear and High Energy Physics Radar cross-section Hypersonic speed Scattering Attenuation Wake Condensed Matter Physics 01 natural sciences Electromagnetic radiation 010305 fluids & plasmas Computational physics Physics::Fluid Dynamics symbols.namesake Mach number Physics::Plasma Physics 0103 physical sciences Reflection (physics) symbols Physics::Accelerator Physics |
| Zdroj: | IEEE Transactions on Plasma Science. 47:3991-3996 |
| ISSN: | 1939-9375 0093-3813 |
| DOI: | 10.1109/tps.2019.2926166 |
| Popis: | The propagation and scattering properties of electromagnetic (EM) waves interacting with the wake flow fields of hypersonic reentry blunt cone are studied by applying the Runge–Kutta exponential time differencing-finite-difference time-domain (FDTD) algorithm in this paper. The parameters of wake flow fields are obtained from the Fluent software. The numerical results show that the reentry plasma has a significant effect on EM wave propagation and scattering of the conductive blunt cone covered with plasma. The attenuation becomes more intense with an increase in the propagation distance due to absorbing and collision, and the reflection coefficients increase with the increase in the Mach number while the transmission coefficients decrease. On the other hand, the backscattering radar cross section (RCS) fluctuates with the varying Mach numbers and the EM wave frequencies at the given wake flow fields. The RCS always decreases with the increase in the plasma thickness of the wake flow fields. In addition, the weak magnetic field has little effect on the backscattering RCS, and the strong magnetic field will lead to the reduction of the backscattering RCS. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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