摘要
研究潜艇热尾流的浮升扩散规律和水面红外特征对红外探潜具有重要意义。以潜艇缩比模型为研究对象,建立了潜艇热尾流三维计算模型。分别使用重叠网格、VOF(Volume of Fluid)模型方法和来流法,对潜艇热尾流的浮升扩散过程进行了数值模拟。分析了潜艇热尾流的浮升扩散规律和温度场特征。使用实验测得的水面红外热像图和热尾流浮升扩散图像对两种仿真方法的精度进行了对比验证。结果表明:基于重叠网格和VOF模型的数值模拟方法精度较高,模拟得到的热尾流最大温度出现时间相差0.2 s,温度偏差为0.003 K,能够很好地模拟潜艇热尾流的浮升扩散和温度分布特性。
Studying the buoyancy diffusion laws and infrared characteristics on the water surface of submarine thermal wake is of great significance for submarine infrared detection.The submarine scale-down model was taken as the research object,and the three-dimensional calculation model of submarine thermal wake was established.The numerical simulation of the buoyancy and diffusion process of submarine thermal wake was performed by using the overset grid,Volume of Fluid(VOF)model method and the flow-through method separately.The buoyancy and diffusion law and temperature field characteristics of submarine thermal wake were analyzed.Through experimentally measuring infrared thermal image on water surface and the buoyancy and diffusion images of thermal wake,the accuracy of the two simulation methods was verified.The results show that the methods based on overset grids and VOF models are more accurate,the time deviation of maximum thermal wake temperature is 0.2 s and the temperature deviation is 0.003 K.It can well simulate the buoyancy diffusion and temperature distribution characteristics of submarine thermal wake.
作者
王平
杜永成
杨立
金方圆
Wang Ping;Du Yongcheng;Yang Li;Jin Fangyuan(Academy of Power Engineering,Naval University of Engineering,Wuhan 430033,China;Science and Technology on Underwater Test and Control Laboratory,Dalian 116013,China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2019年第4期38-46,共9页
Infrared and Laser Engineering
基金
"十三.五"预研项目(9950204090301)
水下测控技术重点实验室延伸性发展基金项目(YS0C261502)
关键词
热尾流
浮升扩散
温度场
重叠网格
VOF模型
thermal wake
buoyancy diffusion
temperature field
overset grid
VOF model
