水下运动目标的水面波纹数值模拟及分析  

Numerical simulation and analysis of free-surface wake generated by moving submerged target

作　　者：李丹梦 金伟其 李力 鲁啸天 裘溯 Li Danmeng;Jin Weiqi;Li Li;Lu Xiaotian;Qiu Su(MOE Key Laboratory of Optoelectronic Imaging Technology and System,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学光电学院,光电成像技术与系统教育部重点实验室,北京100081

出　　处：《红外与激光工程》2018年第11期448-455,共8页Infrared and Laser Engineering

基　　金：国家自然科学基金(61575023);总装武器装备预研基金(9140A02060415BQ01005)。

摘　　要：水下运动目标与水体的相互作用会在水面产生开尔文尾迹和伯努利水丘等特定波纹,为机载、星载的雷达光电探测水下运动目标的位置及速度等提供了可能,成为当前国内外研究的重要方向之一。为了研究水下运动目标水面波纹的特点,论文采用三维不可压缩RANS方程,辅以RNG k-ε湍流模型以及VOF自由面处理方法建立了水下运动目标水面波纹模拟的数学模型,并对水下航行体在不同速度及深度等参数情况下的水面波纹进行模拟,分析了速度及深度等参数与尾迹特征的关系。论文结果对实尺度水下潜艇的海面波纹模拟以及水下潜艇探测技术的研究具有意义。The interaction of moving submerged target and fluid will generate specific wave patterns,such as the Kelvin wave and the Bernoulli dome,which provides possibility for the airborne and spaceborne radar to get the parameters including location and velocity of the target using photoelectric detection.It has become an important research direction.In order to study the characteristics of the wave pattern,a mathematic model was established by using the 3-D incompressible Reynolds-averaged Navier-Stokes(RANS)equations,RNG k-εturbulence model and the volume-of-fluid(VOF)method.The simulation result of the wave patterns of the submerged target at different depths and velocities reveals the relationship between the parameters and the wave pattern.The result obtained is significant for the simulation and detection technology of real submarines.

关 键 词：水下运动目标 水面波纹 Kelvin尾迹 伯努利水丘 数值模拟 

分 类 号：U661.3[交通运输工程—船舶及航道工程] TP321[交通运输工程—船舶与海洋工程]