摘要
将通气空泡技术应用于导弹水下垂直发射出筒过程,通气空泡是高速航行体获得稳定空泡的一种重要技术。采用基于Mixture多相流模型的有限体积法求解RANS方程,结合动网格技术,对水下垂直发射导弹出筒过程的轴对称流场进行了数值模拟,研究导弹的流体动力特性和通气空泡的演化。结果表明通气空泡可减小导弹出筒过程中的阻力和改善导弹的流体动力载荷。
The ventilated cavitation, which is an important technique to obtain stable cavity for high-speed vehicle, is applied to missile＇s underwater vertical launching from an emitter. The finite volume method based on the multiphase model is adopted to solve RA.NS equations. The launching process is simulated combined with the dynamic meshes method. The instanta-neous axisymmetric flow field, the hydrodynamics characteristics of missile and the evolution of ventilated cavity are derived. The results show that the ventilated cavitation plays an important role in reducing the missile＇s drag and improving its hydrody-namic loads.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2007年第5期549-554,共6页
Chinese Journal of Hydrodynamics
关键词
通气空泡
导弹
水下发射
动网格技术
ventilated cavity
missile
underwater launching
dynamic mesh
