Flow features of shock-induced combustion around projectile traveling at hypervelocities

Akiko Matsuo, Kozo Fujii, Toshi Fujiwara

研究成果: Article査読

63 被引用数 (Scopus)

抄録

The shock-induced combustion with periodic unsteadiness around a projectile fired into hypersonic flows is numerically studied. The mechanism of periodic unsteadiness is clarified using an x-t diagram of the flow variable on the stagnation streamline. The frequencies of the periodic unsteadiness obtained quantitatively agree with the experimental observations. The key parameters which are responsible in triggering the instability and in determining the frequency of the periodic unsteadiness are discussed by using the time integration of the species equations. The result indicates that the key parameters are induction time, heat release, and concentration of the heat release. The induction tune is a key parameter for the frequency of the unsteadiness. The concentration of heat release is important for the unsteadiness itself. Total energy creating the compression waves depends on the amount of heat release itself. All of these features are recognized in a simple zero-dimensional analysis.

本文言語English
ページ(範囲)1056-1063
ページ数8
ジャーナルAIAA journal
33
6
DOI
出版ステータスPublished - 1995 6

ASJC Scopus subject areas

  • 航空宇宙工学

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