层化环境下自由表面散度场的数值与实验研究  

Numerical and experimental analysis of divergence of free surface in a stratified fluid

作　　者：侯建军[1] 李大伟 高元博 于开波 HOU Jian-jun;LI Da-wei;GAO Yuan-bo;YU Kai-bo(Dalian Naval Academy,Dalian 214082,China)

机构地区：[1]海军大连舰艇学院,辽宁大连116018

出　　处：《舰船科学技术》2022年第15期60-65,共6页Ship Science and Technology

摘　　要：潜艇激发的海面辐聚辐散场是其重要的尾流水动力特征,是重要的非声探测源。本文采用CFD技术对Suboff模型在层化流体环境中激发的自由表面散度场(辐聚辐散场)进行数值模拟研究,并在层化水池内采用PIV技术对数值仿真结果进行了验证。研究结果表明:仿真计算得到的散度场尾迹开角和最大强度与实验值相符合;随着内Froude数的增大,潜艇尾迹表面辐聚辐散场开角逐渐双e指数递减过渡到线性递减。The surface divergence field excited by submarine is an important hydrodynamic characteristic of wake and is an important source of non-acoustic detection.In this paper,CFD was used to numerically simulate the free surface divergence field excited by Suboff model in a stratified fluid environment,and PIV technology was used to verify the numerical simulation results in a stratified pool.The results show that the Kelvin angle and the maximum intensity of the divergence wake calculated by simulation are in good agreement with the experimental values.With the increase of the internal Froude number,the Kelvin angle of divergence field on the submarine wake surface gradually decreases from double e exponent function to decrease linear function.

关 键 词：Suboff 数值模拟 PIV 辐聚辐散场. 

分 类 号：O352[理学—流体力学]