中国舰船研究2025，Vol.20Issue(z1)：56-69,14.DOI:10.19693/j.issn.1673-3185.04204
锥头型双航行体并联高速垂直入水数值模拟研究
Numerical simulation study on parallel high-speed vertical water entry of cone-shaped double vehicles
摘要
Abstract
[Objectives]The cross-medium"swarm"penetration of multiple vehicles has attracted signifi-cant attention from researchers worldwide.To investigate the mutual interference between two vehicles during high-speed water entry,a numerical simulation is performed to analyze the high-speed water entry process of two parallel cone-shaped vehicles with varying spacing.[Methods]The present numerical model is based on Star CCM+.The turbulence calculations were performed using the Realizable k-ε turbulence model based on the Reynolds Averaged Navier-Stokes(RANS)approach.The volume of fluid(VOF)multiphase flow tech-nique was employed to model the interaction of multiple fluids(air,water,and water vapor),capturing the mo-tion of free surfaces within a single medium.The Schnerr-Sauer cavitation model was employed to calculate the vapor volume fraction,accounting for the phase change between water vapor and liquid.Additionally,the overset grid technology was applied to track the motion of the cylindrical projectile.The study explores the hy-drodynamic characteristics,including the evolution of cavity shape,the pressure load on the head,and the mo-tion trajectory of two parallel vehicles during water entry at different spacings d.[Results]Upon contact with the surface,the vehicle's load and the impulsive pressure on the head increase dramatically,reaching their maximum values instantly for different spacings,and then they quickly decrease.At a spacing of d=0.8D,the maximum impact load is more than 20%greater than that at d=1.6D,and the corresponding maximum im-pact pressure on the head slightly increases,where D is the diameter of the vehicle.However,when d≥1.6D,the spacing has little effect on the maximum load and pressure on the vehicle.During the water entry process,the pressure distribution on the inner and outer sides of the heads of the dual-body vehicles becomes unbal-anced.The smaller the spacing,the more significant this mutual influence,resulting in greater load differences between the two sides.The cavity shape develops freely on the outer side but is restricted on the inner side due to interference.Consequently,the vehicle's tail tilts inward,producing a tail slap phenomenon.However,as the spacing increases,the development and evolution of the internal cavities of the dual-body vehicles become more gradual.[Conclusions]When the dual-body vehicle structure enters the water in parallel,the trend of cavity development becomes more pronounced.The degree of interference from adjacent projectiles is closely related to the distance between them.This numerical study provides engineering guidance for the load assess-ment of dual-body vehicles during high-speed vertical water entry.关键词
数值模拟/双航行体/并联/高速入水/空腔演化Key words
numerical simulation/dual-navigation vehicles/parallel connection/high-speed water entry/cavitation evolution分类
交通工程引用本文复制引用
张营彬,毛艺达,李润博,崔虎威,石伏龙..锥头型双航行体并联高速垂直入水数值模拟研究[J].中国舰船研究,2025,20(z1):56-69,14.基金项目
重庆市教委科学技术研究项目资助(KJQN202200737,KJQN202100704) （KJQN202200737,KJQN202100704）
大连理工大学海岸和近海工程国家重点实验室开放基金资助项目(LP2401) （LP2401）
水路交通控制全国重点实验室资助项目(W24CG000048) （W24CG000048）
重庆交通大学研究生科研创新资助项目(2024S0095) （2024S0095）
