摘要
针对航行体排气水下发射流体动力问题,采用VOF(Volume of Fluid)多相流模型、标准湍流模型,结合动网格技术,进行发射过程流场数值仿真,获得了航行体表面压力分布及气泡的发展过程,计算结果与试验结果吻合较好;利用形成的数值方法,研究了发射深度、出筒速度对排气气泡发展过程的影响,获得了对工程设计具有参考价值的结论。
Aiming at issues concerning the flow dynamics of underwater vehicle launching with exhaust, the numerical simulation on the flow field of underwater launching process was established. Combining VOF multiphase flow model, the standard turbulence model,and the technique of dynamic mesh, characteristics of the distribution of pressure on the vehicle＆#39;s surface and the forming process of exhausting bubble were obtained and the numerical result agreed well with those in experiments. The influence of depth of launch and velocity outside tube on the forming process of bubble is numerically studied and some conclusions are achieved which have important reference value to engineering application.
出处
《导弹与航天运载技术》
北大核心
2014年第5期14-18,共5页
Missiles and Space Vehicles
关键词
水下航行体
多相流
排气
气泡
Underwater vehicle
Multiphase flow
Exhaust
Bubble
