火箭助飞鱼雷会遭受入水带来的恶劣跨介质力学环境，本文基于均质平衡流和VOF多相流理论建立气-液-汽三相耦合流动数学模型，并通过嵌套网格技术，实现多相流与6-DOF结构体动力学耦合的高速入水分析，研究气/液相可压缩性对结构体高速入水载荷的影响，并进一步分析不同入水速度（100～300 m/s）和不同横升角（10°，40°）对应的流体可压缩性影响，从而对可压缩性的影响行较全面的分析，研究结果有助于清晰认识高速入水过程流体可压缩性的作用机理，可用于指导相关的降载头型及缩比试验等设计。
Rocket-assisted torpedoes suffer from the severe trans-medium mechanical environment caused by water entry. This article establishes a mathematical model of gas-liquid-vapor three-phase coupled flow based on the homogeneous equilibrium flow and the VOF multiphase flow. The overset grid technology is adopted to realize the coupling analysis of water entry between the multiphase flow and the 6-DOF body dynamics. The effects of gas compressibility and liquid compressibility on the high-speed water entry loads of body are investigated. Further, the corresponding effects of different water entry speeds (100～300 m/s) and deadrise angles (10° and 40°) are analyzed comprehensively. The results can help readers clearly understand the mechanism of fluid compressibility action during the high-speed water entry, which provides a helpful guidance for the relevant designs of load-reduced nose and scaling test.
2022,44(19): 6-11 收稿日期：2022-01-30
DOI：10.3404/j.issn.1672-7649.2022.19.002
分类号：J630
基金项目：国防科技重点实验室基金资助项目（JCKY20207CD01）
作者简介：冯鹏辉(1990-)，男，博士，研究方向为跨介质力学
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