Numerical analysis on the effect of angle of attack on evaluating radio-frequency blackout in atmospheric reentry

Minseok Jung, Hisashi Kihara, Ken ichi Abe, Yusuke Takahashi

研究成果: ジャーナルへの寄稿学術誌査読

14 被引用数 (Scopus)

抄録

A three-dimensional numerical simulation model that considers the effect of the angle of attack was developed to evaluate plasma flows around reentry vehicles. In this simulation model, thermochemical nonequilibrium of flowfields is considered by using a four-temperature model for high-accuracy simulations. Numerical simulations were performed for the orbital reentry experiment of the Japan Aerospace Exploration Agency, and the results were compared with experimental data to validate the simulation model. A comparison of measured and predicted results showed good agreement. Moreover, to evaluate the effect of the angle of attack, we performed numerical simulations around the Atmospheric Reentry Demonstrator of the European Space Agency by using an axisymmetric model and a three-dimensional model. Although there were no differences in the flowfields in the shock layer between the results of the axisymmetric and the three-dimensional models, the formation of the electron number density, which is an important parameter in evaluating radio-frequency blackout, was greatly changed in the wake region when a non-zero angle of attack was considered. Additionally, the number of altitudes at which radio-frequency blackout was predicted in the numerical simulations declined when using the three-dimensional model for considering the angle of attack.

本文言語英語
ページ(範囲)1295-1306
ページ数12
ジャーナルJournal of the Korean Physical Society
68
11
DOI
出版ステータス出版済み - 6月 1 2016

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学一般

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