哈尔滨工程大学学报2024，Vol.45Issue(6)：1111-1118,8.DOI:10.11990//jheu.202201007
温度分层环境中水下航行器机动下潜热尾流特征
Thermal wake characteristics of an underwater vehicle in a maneuvering diving mode in a temperature-stratified environment
摘要
Abstract
To study the surface temperature anomalies caused by an underwater vehicle wake,a three-dimensional SUBOFF mathematical model was established using the finite volume method.Fluent UDF and Patch were used to control the maneuvering diving mode and water temperature stratification,respectively.The numerical simulation results show that the wake forms an oval temperature anomaly region comprising two discontinuous high-temperature hot spots on the surface of the underwater vehicle maneuvering down,and a stratified water area with a positive temperature gradient enhances the surface temperature anomaly caused by thermal wake.Under the no heat dis-charge condition,the temperature stratification of the water area is greatly disturbed by a diving maneuvering under-water vehicle,and a cold wake appears.In contrast,due to the influence of heat emission,the thermal wake floats upward as a kidney vortex,the vortex structure scale increases with the sailing distance,and the core temperature decreases with increasing sailing distance.Stratified seawater with a positive temperature gradient enhances the ab-normal sea surface temperature characteristics caused by cooling water;the larger the temperature gradient,the more continuous the hot spots.The hot spot has a maximum core temperature of 292.24 K and differs in tempera-ture from the surrounding seawater by 0.12 K.关键词
水下航行器/热尾流/有限体积法/机动下潜/温度分层/高温热斑/椭圆形温度异常区/正温度梯度Key words
underwater vehicle/thermal wake/finite volume method/maneuvering dive/temperature stratification/high-temperature hot spot/elliptic temperature anomaly region/positive temperature gradient分类
数理科学引用本文复制引用
李戈洋,杜永成,杨立..温度分层环境中水下航行器机动下潜热尾流特征[J].哈尔滨工程大学学报,2024,45(6):1111-1118,8.基金项目
国家自然科学基金项目(52271354). （52271354）
