气体-燃料液滴两相系统爆轰的数值模拟  

NUMERICAL MODELING OF DETONATION IN GAS FUEL DROPLETS SYSTEM

作　　者：洪滔[1] 秦承森[1] 

机构地区：[1]北京应用物理与计算数学研究所,北京100088

出　　处：《爆炸与冲击》1999年第4期335-342,共8页Explosion and Shock Waves

基　　金：中国工程物理研究院基金

摘　　要：用两相流体力学模型对气体燃料液滴系统进行了研究。数值模拟了点火后两相系统爆轰波的发展过程，得到爆轰波的结构和参数。数值模拟结果表明气体燃料液滴系统爆轰波有较宽的反应区，因而两相爆轰波的曲率对爆速的影响效应十分明显。进行了燃料液滴尺寸对爆轰波的结构和参数的影响的数值模拟。除了很小的液滴外，燃料液滴在爆轰波前导激波面和ＣＪ面间不能完全气化。随着液滴尺寸的增加，燃料液滴在爆轰波前导激波面和ＣＪ面间释放出的能量随之减少，爆轰参数也随之下降。The detonation in oxygen fuel droplet system is numerically studied by using a two phase fluid model.The development process of detonation in such two phase system after ignition is modeled.The velocity of detonation is strongly influenced by its curvature because the two phase detonation has a wide reactive zone between the leading shock wave and CJ surface.The effect of droplet size on the parameters of detonation is also numerically modeled.Besides the smaller droplet,fuel droplet can not be atomized and evaporated completely between the leading shock wave and CJ surface.With the increase of fuel droplet size,the energy sustaining the detonation wave decreases and the parameters of detonation also decrease.The parameters in the leading shock wave and CJ surface are determined by numerical modeling.The gas phase parameters in the leading shock wave are much higher than that of in CJ surface.

关 键 词：气体-液滴系统 两相流 爆轰 数值模拟 

分 类 号：O381[理学—流体力学]