대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2001년도 추계학술대회논문집B
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- Pages.444-449
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- 2001
충격파를 동반한 연소현상에 관한 적응 격자 유한요소법 해석
Adaptive Finite Element Analysis of Shock-induced Combustion
- Moon, Su-Yeon (Kyungpook National University) ;
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Lee, Chooung-Won
(Kyungpook National University) ;
- Sohn, Chang-Hyun (Kyungpook National University)
- 발행 : 2001.11.01
초록
A numerical parametric study is conducted to simulate shock-induced combustion with a variation in freestream conditions. 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 front is established if the 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.
키워드