实际海洋环境中存在温度分层现象，研究其对于潜艇尾流浮升扩散的影响具有重要意义。本文基于重叠网格技术，建立潜艇热尾流三维模型，对潜艇尾流在正负温度分层环境的浮升扩散进行数值模拟，分析其浮升过程与海面红外特征，研究了温度分层的正负与梯度大小对于潜艇尾流的影响。结果表明：分层环境下，海面红外特征主要由潜艇运动引起的的海水扰动所导致；分层环境下海面红外特征相比均匀海水更为明显；分层环境对于冷却水浮升具有抑制作用，且抑制效果与温度梯度大小正相关；海面最大温差与温度分层梯度基本呈正比例关系。
It is of great significance to study the influence of temperature stratification on the buoyancy and diffusion of submarine wake. In this paper, based on the overset grid technology, a three-dimensional model of submarine thermal wake is established. The buoyancy process and infrared characteristics of sea surface are analyzed, and the influence of positive and negative temperature stratification and gradient on submarine wake is studied. The results show that in stratified environment, the infrared characteristics of sea surface are mainly raised by sea water disturbance caused by submarine movement; the infrared characteristics of sea surface formed in stratified environment are more obvious than that of uniform sea water; stratified environment has inhibitory effect on cooling water floating, and the inhibitory effect is positively related to the temperature gradient; the maximum temperature difference of sea surface is basically proportional to the temperature gradient.
2022,44(7): 37-42 收稿日期：2021-03-09
DOI：10.3404/j.issn.1672-7649.2022.07.007
分类号：O357.5+3
基金项目：“十三·五”预研项目（9950204090301）
作者简介：吴霆锋(1997-),男,硕士研究生,研究方向为传热、传质热流体学及其应用
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