水下航行体热尾流浮升特性研究  

Buoyant characteristics of thermal wakes discharged by underwater vehicles

作　　者：张昊春[1] 吉宇[1] 马锐[2] 李垚[3] 严利明[1] 秦江[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001 [2]中国舰船研究设计中心,湖北武汉430064 [3]哈尔滨工业大学复合材料研究所,黑龙江哈尔滨150001

出　　处：《舰船科学技术》2015年第7期24-28,共5页Ship Science and Technology

基　　金：国家自然科学基金资助项目(91216123);国家自然科学基金创新研究群体资助项目(51121004)

摘　　要：水下航行体排放的热尾流的浮升规律及其水面温度分布特征是红外探测的基础。本文从热尾流形成过程出发,建立水下射流的二维计算模型。基于Fluent软件的湍流数学模型,对温度分层和均匀环境介质中的热尾流的浮升特性及水面温度分布进行数值计算,并以VOF方法追踪了温度分层环境中的尾流界面,得到热尾流的轨迹与温度的衰减规律,对比分析温度分层环境与均匀介质环境中的异同。The buoyant characteristics and temperature distribution of thermal wakes discharged by underwater vehicles are the basis of the detection with infrared technology. This paper started from the formation of thermal wakes, and established a two - dimensional model about the submerged buoyant jet. Using the turbulent flow model in Fluent software, the numerical simulation in temperature stratification case and homogeneous environmental media case were derived, and obtained the buoyant laws as well as temperature distribution. In addition, VOF method was adopted to trace the interface of jet in temperature stratification case ; the trajectory of thermal wakes and the decay laws of its temperature were figured out as well. Then a comparison of in the temperature stratification case and in homogenous media case was carried out.

关 键 词：水下航行体 热尾流 浮升规律 温度分布 数值模拟 

分 类 号：U661.1[交通运输工程—船舶及航道工程]