RLPG 再生喷射燃烧过程的全模拟  

Characterization of Regenerative Spray Combustion Process of RLPG

作　　者：朱广圣[1] 林钧毅[1] 张月林[1] 

机构地区：[1]南京理工大学机械学院

出　　处：《南京理工大学学报》1997年第4期348-351,共4页Journal of Nanjing University of Science and Technology

摘　　要：利用建立的再生式液体药火炮（ＲＬＰＧ）中再生喷射燃烧过程的多维多相流数学模型，以３７ｍｍＲＬＰＧ为对象，对其再生喷射燃烧过程进行了全模拟，揭示了过程中各物理量的时空分布特征。结果表明：（１）整个液体喷射过程期间，燃烧室内存在连续的液注形态。液体药的燃烧主要发生在燃烧室和身管入口区域。（２）身管入口节流对燃气流速和压力的时空分布产生重要影响。身管中段的燃气流速和压力沿轴向成线性分布。（３）燃烧室和身管入口附近区域处于同一高温水平，相应区域的壁面热负荷较大。身管内燃气温度沿弹底方向逐渐降低。A multiphase multidimensional mathematical model of the regenerative spray combustion process of RLPG is founded and elaborated with the experimental data acquired with a high speed acquiring system. The model is then used to characterize numerically the regenerative spray combustion process of 37mm RLPG in detail. The main results show: (1) A continuous liquid propellant jet exists during the whole regenerative injection process. The propellant burning happens mainly in the region of combustion chamber and gun tube inlet; (2) The tube inlet throttle has great influence on the time space distributions of the gas velocity and pressure. The gas velocity and pressure distribute linearly along the gun tube except the region near the tube inlet and outlet; (3) The gas in the combustion chamber and the tube inlet reaches a high temperature level. A very high heat flux occurs in the near wall region of the combustion chamber.

关 键 词：燃烧 喷射 数值模拟 内弹道学 火炮 RLPG 

分 类 号：TJ301[兵器科学与技术—火炮、自动武器与弹药工程]