筒口气体射流下航形体出筒流场特性研究

摘要

In this paper, mixture multiphase flow mode was used to analyze the whole process of underwater vehicle ejction from the tube with gas jet. The unsteady multiphase flow field calculation method of gas jet forming process under-water vertical launch was established and validated. The gas distribution and the hydrodynamic loads and surface pressure distribution in the process of model underwater vehicle ejection were analyzed, and the effect of gas jet reducing loads was assessed through comparing the results, which can provide technical support for the good trajectory environment of underwa-ter vehicle.%本文采用多相流混合模型,针对筒口气体射流环境下水下航形体弹射出筒过程进行仿真研究.通过试验验证了水下垂直非定常多相流场计算方法,初步分析了航形体出筒过程气体分布情况、水动力载荷和表面压力分布规律,对比分析了筒口气体射流降载效果,为航形体具备良好的弹道环境提供技术支撑.