海洋盐度对水下航行器热尾流行为的影响
Effect of oceanic salinity on the thermal wake behavior of underwater vehicles
吴霆锋 1杜永成 1杨立 1王保霖 1张泽华1
作者信息
- 1. 海军工程大学 动力工程学院,湖北 武汉 430033
- 折叠
摘要
针对海洋中的盐度环境对于水下航行器热尾流浮升扩散的影响,本文基于重叠网格技术,建立了水下航行器热尾流三维模型,分别对热尾流在均匀盐度与分层盐度环境下的浮升扩散过程进行了数值模拟,采用浮频率数表征盐度环境特征,研究了海洋盐度对于热尾流的影响.结果表明:盐度分层环境对潜艇冷却水浮升具有明显抑制作用,该环境下海面温度特征随盐度梯度的增大而减弱.
Abstract
A salinity phenomenon occurs in an actual marine environment.Aiming at its influence on the buoyancy lift and diffusion of the thermal wake flow of underwater vehicles,a three-dimensional model of the thermal wake flow of an underwater vehicle is established to perform numerical simulations of the buoyancy lift and diffusion processes of thermal wake flow in environments of even and layered salinity,respectively.The buoyancy frequency number was used to characterize the salinity environment and study the influence of oceanic salinity on thermal wake flow.The results showed that the layered salinity environment can considerably constrain the buoyancy lift of the cooled water of a submarine.In such an environment,the temperature characteristics of the sea surface are weakened following an increase in the salinity gradient.
关键词
热尾流/海洋盐度/重叠网格技术/温度场/浮升扩散/水下航行器Key words
thermal wake flow/oceanic salinity/overset grid technology/temperature field/buoyancy lift and diffu-sion/underwater vehicle引用本文复制引用
基金项目
预研项目(十三五)(9950204090301)
国家自然科学基金(52271354)
出版年
2024
国家科技期刊平台
NSTL
万方数据