Hydrodynamic and kinematic characteristics of high-speed inclined water-exit process in wave environment

波浪环境下水下航行体高速倾斜出水流体动力与运动特性研究

¹ School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
² Shanxi Pingyang Industry Machinery Co., Ltd, Houma 043099, China
³ Marine Design & Research Institute of China, Shanghai 200011, China
⁴ State Grid Huaibei Power Supply Company, Huaibei 235000, China
⁵ Xi'an Tianhe Defense Technology Co., Ltd, Xi'an 710000, China

Received: 3 August 2023

Abstract

Aiming at the process of underwater vehicle crossing the water-air interface based on the computational fluid dynamics(CFD) method, integrating the volume of fluid(VOF) and dynamic fluid body interaction(DFBI) models, a numerical simulation method for the trans-media process in a wave environment was studied. The motion simulation method of underwater vehicle under the action of complex fluid environment was established. The simulation of the water-exit process of the underwater vehicle in a wave environment has been realized. The accuracy verification of the wave-making and trans-media processes has been completed. The hydrodynamic and kinematic characteristics of the vehicle during the water-exit process have been obtained. The influences of the wave phase and velocity on the force and motion characteristics of the underwater vehicle were obtained, which provides technical support for designing the unmanned vehicles.

摘要

针对水下航行体跨水空交界面过程, 基于CFD方法, 结合VOF与DFBI模型, 建立了复杂构型航行体穿越波浪环境的高精度数值模拟模型, 实现了波浪环境下复杂构型航行体出水过程模拟, 完成了造波和跨介质过程的模拟精度验证, 得到了航行体出水过程中的流体动力和运动特性, 获得了波浪相位、运动方式等对航行体的受力和运动特性的影响规律, 为跨介质无人航行体设计提供技术支撑。