Proceedings of the Korean Society of Propulsion Engineers Conference (한국추진공학회:학술대회논문집)
- 2001.11a
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- Pages.43-47
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- 2001
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- 1975-342X(pISSN)
Numerical Simulation of Projectiles in Detonable Gases
- Moon, Su-Yeon (Kyungpook National University) ;
- Lee, Chooung-Won (Kyungpook National University) ;
- Sohn, Chang-Hyun (Kyungpook National University)
- Published : 2001.11.01
Abstract
A numerical parametric study is conducted to simulate shock-induced combustion with a variation in freestream conditions. The analysis is limited to inviscid flow and includes chmical nonequilibrium. A steady combustion front is established if the freestream Mach number is above the Chapman-Jouguet speed of the mixture. On the other, an unsteady reaction fi:ont is established if the freestream Mach number is below or at the Chapman-Jouguet speed of the mixture. The three cases have been simulated for Machs 4.18, 5.11, and 6.46 with a projectile diameter of 15 mm. Machs 4.18 and 5.11 shows an unsteady reaction front, whereas Mach 6.46 represents a steady reaction front. Thus Chapman-Jouguet speed is one of deciding factor for the instabilities to trigger. The instabilities of the chemical front with a variation of projectiles diameters will be investigated.
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