冲压加速器燃烧流场数值模拟  

NUMERICAL SIMULATION OF COMBUSTION FLOW FIELD IN RAM ACCELERATOR

作　　者：张国强[1] 金志明[1] 翁春生[1] 

机构地区：[1]南京理工大学动力工程学院,南京210094

出　　处：《弹道学报》2001年第3期38-41,共4页Journal of Ballistics

摘　　要：冲压加速器是利用预混可燃气体燃烧释放的化学能将弹丸加速的超高速发射装置 .文中建立了冲压加速器有限速率化学反应数学模型 ,推导了多组分化学反应系统 TVD格式的数值公式 ,数值模拟了冲压加速器内有限速率反应流场 .在亚爆轰模式 ,预混可燃气体在弹后点燃 ,并在弹后某一位置形成全管面燃烧 .Ram accelerator is a propulsion technology for accelerating projectile to ultrahigh velocity using chemical energy of propellant gaseous mixture. The axisymmetric finite rate combustion kinetics model for ram accelerator is established in this paper. The TVD formulation for multicomponent chemical system is derived. The combustion flow field of ram accelerator is numerically simulated. It is found that combustion of mixed gas is occurred behind the base of the projectile in subdetonative mode, and the full tube area combustion is built at some position behind the projectile.

关 键 词：冲压加速器 混合气体 数值模拟 TVD有限体积法 燃烧流场 弹丸 高速发射装置 

分 类 号：TJ410.33[兵器科学与技术—火炮、自动武器与弹药工程] O357[理学—流体力学]