Wave structure and unsteadiness of stabilized oblique detonation waves around hypersonic projectile

Yu Daimon, Akiko Matsuo, Jiro Kasahara

研究成果: Conference contribution

抄録

Unsteady combustion around spherical projectile flying into the combustible gas whose speed is over CJ detonation one is studied numerically. Simulations of 22 computational conditions using simple reaction model which assumes hydrogen-air premixed gas, are carried out with various projectile speed, diameter, and the premixed gas pressure under the axisymmetric and inviscid assumptions. The failed and stabilized oblique detonations are observed in the simulations. The stabilized oblique detonation appears in the cases when the projectile diameter is large and the gas pressure is high. For some of the failed oblique detonations, a collision of triple points is not observed. The propagating speed of the triple point is determined by the magnitude balance between the advection speed behind the incident shock and the speed of transverse wave. It is also found that the transverse wave propagates at CJ detonation speed when the advection flow behind the incident shock perpendicularly crosses the transverse wave. The stabilized oblique detonation has the bothsided propagating transverse wave. The cellular structure is observed using the piles of pressure distributions, and their sizes become irregular in larger diameters.

元の言語English
ホスト出版物のタイトルCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
ページ14029-14037
ページ数9
20
出版物ステータスPublished - 2007
イベント45th AIAA Aerospace Sciences Meeting 2007 - Reno, NV, United States
継続期間: 2007 1 82007 1 11

Other

Other45th AIAA Aerospace Sciences Meeting 2007
United States
Reno, NV
期間07/1/807/1/11

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detonation waves
hypersonics
Hypersonic aerodynamics
Detonation
Projectiles
detonation
projectiles
transverse waves
Advection
advection
Gases
gas
gas pressure
shock
piles
gases
pressure distribution
Pressure distribution
Piles
simulation

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

これを引用

Daimon, Y., Matsuo, A., & Kasahara, J. (2007). Wave structure and unsteadiness of stabilized oblique detonation waves around hypersonic projectile. : Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting (巻 20, pp. 14029-14037)

Wave structure and unsteadiness of stabilized oblique detonation waves around hypersonic projectile. / Daimon, Yu; Matsuo, Akiko; Kasahara, Jiro.

Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting. 巻 20 2007. p. 14029-14037.

研究成果: Conference contribution

Daimon, Y, Matsuo, A & Kasahara, J 2007, Wave structure and unsteadiness of stabilized oblique detonation waves around hypersonic projectile. : Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting. 巻. 20, pp. 14029-14037, 45th AIAA Aerospace Sciences Meeting 2007, Reno, NV, United States, 07/1/8.
Daimon Y, Matsuo A, Kasahara J. Wave structure and unsteadiness of stabilized oblique detonation waves around hypersonic projectile. : Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting. 巻 20. 2007. p. 14029-14037
Daimon, Yu ; Matsuo, Akiko ; Kasahara, Jiro. / Wave structure and unsteadiness of stabilized oblique detonation waves around hypersonic projectile. Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting. 巻 20 2007. pp. 14029-14037
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