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水下航行体垂直发射尾部流场数值计算
引用本文:燕国军,阎君,权晓波,魏海鹏.水下航行体垂直发射尾部流场数值计算[J].导弹与航天运载技术,2012(3):42-46.
作者姓名:燕国军  阎君  权晓波  魏海鹏
作者单位:北京宇航系统工程研究所,北京,100076
摘    要:采用Mixture多相流模型和动网格技术求解非定常RANS方程,对航行体水下垂直发射过程进行数值模拟,研究了尾部形状和尾空泡初始压力对航行体尾部流场、轴向速度等的影响.计算结果与试验结果吻合较好,结果表明尾部形状决定了航行体尾空泡的生成演化过程,进而影响航行体尾部压力和轴向运动速度;尾空泡初始压力越大,出筒后航行体轴向速度最大值越大,尾部压力振荡周期越长.

关 键 词:水下航行体  多相流  动网格  垂直发射  尾部形状

Numerical Study on Tail Flow Field of Underwater Vehicle in Vertical Launching
Yan Guojun , Yan Jun , Quan Xiaobo , Wei Haipeng.Numerical Study on Tail Flow Field of Underwater Vehicle in Vertical Launching[J].Missiles and Space Vehicles,2012(3):42-46.
Authors:Yan Guojun  Yan Jun  Quan Xiaobo  Wei Haipeng
Affiliation:(Beijing Institute of Astronautical Systems Engineering,Beijing,100076)
Abstract:Numerical simulation of gas-liquid flow field of underwater vehicle in vertical launching process is conducted by solving unsteady RANS equation with Mixture model and dynamic mesh technique.The influence of vehicle tail shape and initial pressure of tail cavity on vehicle tail flow field and axial velocity was studied.The simulation results agree with experimental results well,and show that vehicle tail shape determines the evolutionary process of tail cavity,thereby influences vehicle tail pressure and axial velocity;the bigger initial pressure of tail cavity is,the larger maximum value of vehicle axial velocity after tube-exiting is and the longer oscillation period of vehicle tail pressure is.
Keywords:Underwater vehicle  Multiphase flow  Dynamic mesh  Vertical launching  Vehicle tail shape
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