摘要
采用颗粒轨道模型(欧拉-拉格朗日模型)以及分区网格技术,对带潜入式摆动喷管的固体火箭发动机中的三维两相流动进行了一体化数值模拟,得出以下结论:凝聚相的存在对发动机中的两相流动有明显的影响,喷管中粒子浓度高的区域速度低,温度高;喷管的摆动造成发动机后翼槽内流动的不对称,并对发动机的性能造成明显的损失,当喷管摆动到一定角度时候,喷管摆向一侧的后翼槽内出现漩涡;喷管的摆动影响发动机后翼槽内以及壁面上粒子浓度的分布。
A numerical simulation of the three-dimensional, two-phase flow in the Solid Rocket Motor （SRM）with the submerged vectored nozzle is presented, which is based on the particle trajectory model （Euler-Lagrange model） and partitioned grid. The following conclusions are reached： 1） The existing of ALO particles affects the two-phase flow in the SRM seriously. Comparatively, the velocity of the flow is lower and the temperature is higher at the position where the particles congregate. 2） The swing of the nozzle makes the asymmetry of the flow in the back fin- slot of the grain and makes a distinct loss of motor＇s performance. When the swing angle reaches a certain degree, the vortex appears in the back fin-slot the same side as the nozzle swinging to. 3） The swing of the nozzle has an effect on the distribution of particles both in the back fin-slot of the motor and on the wall surface.
出处
《弹箭与制导学报》
CSCD
北大核心
2006年第1期104-107,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
国家自然科学基金资助项目(50376054)
