高温燃气推进下水下航行器出筒发射数值模拟研究
Numerical Simulation Study on Launch of Underwater Vehicle with High Temperature Gas Propulsion
邬明 1张焰宇 2孙善春1
作者信息
- 1. 中国船舶集团有限公司第七一〇研究所,湖北 宜昌 443003;清江创新中心,湖北 武汉 430200
- 2. 大连海事大学船舶与海洋工程学院,辽宁 大连 116026
- 折叠
摘要
水下航行器出筒过程往往伴随着高温高速的水气多相混合流动,物理过程复杂多变,对航行器的发射动力、载荷以及出筒后的运动姿态等有着重要影响.以某水下航行器出筒发射为例,采用CFD方法开展高温燃气推进下水下航行器出筒发射数值模拟研究,通过不同网格密度下的水平方向位移和竖直方向位移比较,论证了数值模拟的收敛性.进一步利用所建立的数值模型模拟了不同初始发射倾角、不同横向来流作用下高温燃气推进下水下航行器出筒过程,得到了航行器出筒后的偏转角度和速度,明确了发射过程中的速度场与温度场的典型特征等,为水下热发射系统的设计提供指导.
Abstract
The process of underwater vehicles exiting the barrel is often accompanied by complex flow of high-temperature and high-speed gas inside the barrel and multiphase mixed flow of water and gas at the barrel mouth,presenting complex flow states and changing patterns,which have important impacts on the launch power,load,and motion attitude of the vehicle after exiting the barrel.This article takes the launch of a certain underwater vehicle as an example and uses CFD method to conduct numerical simulation research on the launch of a high-temperature gas propulsion underwater vehicle.By comparing the horizontal and vertical displacement under different grid densities,the convergence of the numerical simulation in this article is demonstrated.Using a validated numerical model,the process of high-temperature gas propulsion for underwater vehicles exiting the barrel is simulated under different initial launch angles and lateral inflow effects.The deflection angle and velocity of the vehicle after exiting the barrel are obtained,and the typical characteristics of the velocity and temperature fields during the launch process are clarified,providing theoretical guidance for design of underwater thermal launch system.
关键词
水下发射/高温燃气射流/计算流体力学Key words
underwater launch/high temperature gas jet/computational fluid dynamics引用本文复制引用
基金项目
科工局基础科研项目(JCKY2021206B005)
出版年
2024
国家科技期刊平台
NSTL
万方数据