Calculation of drag coefficients for hypersonic spherical projectiles initiating oblique detonation wave or shock-induced combustion

Jeong Yeol Choi, Shinichi Maeda, Jiro Kasahara, Akiko Matsuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A CFD study is carried out to estimate the drag coefficients of a hypersonic projectile in detonable gases initiating shock-induced combustion (SIC) or oblique detonation wave (ODW) to apply the detonation initiation criterion for the classification of OSIC and ODW regimes. The drag coefficients of a spherical body in non-reacting flow is well known, but it is a questionnaire whether it can be apply for the present case involving strong overdriven detonation ahead of projectile surrounded by hot burned gas. Numerical model is based on the Navier-Stokes equations for multispecies reacting flows Menter's shear-stress transport (SST) turbulence model. The present CFD results reproduce the experimental visualization quite well and show good agreements with observations. The drag coefficients predicted from the CFD seems to be in the reasonable range and give the explanation on the effects of the detonative combustion around the projectile. It is shown that the detonation initiation criterion is shown to be effective for the spherical projectile with the drag coefficient estimated presently.

Original languageEnglish
Title of host publication50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
DOIs
Publication statusPublished - 2012
Event50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Nashville, TN, United States
Duration: 2012 Jan 92012 Jan 12

Other

Other50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityNashville, TN
Period12/1/912/1/12

Fingerprint

Drag coefficient
Hypersonic aerodynamics
Detonation
Projectiles
Computational fluid dynamics
Turbulence models
Gases
Navier Stokes equations
Shear stress
Numerical models
Visualization

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Choi, J. Y., Maeda, S., Kasahara, J., & Matsuo, A. (2012). Calculation of drag coefficients for hypersonic spherical projectiles initiating oblique detonation wave or shock-induced combustion. In 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition [AIAA 2012-0983] https://doi.org/10.2514/6.2012-983

Calculation of drag coefficients for hypersonic spherical projectiles initiating oblique detonation wave or shock-induced combustion. / Choi, Jeong Yeol; Maeda, Shinichi; Kasahara, Jiro; Matsuo, Akiko.

50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2012. AIAA 2012-0983.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Choi, JY, Maeda, S, Kasahara, J & Matsuo, A 2012, Calculation of drag coefficients for hypersonic spherical projectiles initiating oblique detonation wave or shock-induced combustion. in 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition., AIAA 2012-0983, 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Nashville, TN, United States, 12/1/9. https://doi.org/10.2514/6.2012-983
Choi JY, Maeda S, Kasahara J, Matsuo A. Calculation of drag coefficients for hypersonic spherical projectiles initiating oblique detonation wave or shock-induced combustion. In 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2012. AIAA 2012-0983 https://doi.org/10.2514/6.2012-983
Choi, Jeong Yeol ; Maeda, Shinichi ; Kasahara, Jiro ; Matsuo, Akiko. / Calculation of drag coefficients for hypersonic spherical projectiles initiating oblique detonation wave or shock-induced combustion. 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2012.
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