| 水下高速射弹超空泡形态与阻力特性研究 |
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| 引用本文： | 熊天红,李铁鹏,易文俊,吴军基.水下高速射弹超空泡形态与阻力特性研究[J].弹道学报,2009,21(2). |
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| 作者姓名： | 熊天红 李铁鹏 易文俊 吴军基 |
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| 作者单位： | 1. 南京理工大学,瞬态物理国家重点实验室,南京,210094
2. 海军装备部兵器部,北京,100841 |
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| 基金项目： | 国防重点实验室资助项目 |
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| 摘 要： | 基于Rayleigh-Plesset方程的单一介质可变密度混合模型,建立了自然空化流动的多相流模型,利用软件Fluent6.0对水下高速射弹空泡流动进行了数值模拟,计算了4种射弹模型在高速运动下的超空泡形态以及阻力系数,分析了射弹空化器直径、长细比和空化敷等对射弹超空泡几何形态以及阻力特性的影响.仿真结果表明,随着空化数的增加,超空泡直径与长度减小;空化器直径对射弹阻力特性的影响显著;增加航行体的长细比,可以获得更小的阻力系数.
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| 关 键 词： | 高速射弹 自然超空泡 阻力系数 |
Investigation on Characteristics of Cavity Form and Drag for Underwater High-speed Projectile |
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| XIONG Tian-hong,LI Tie-peng,YI Wen-jun,WU Jun-ji.Investigation on Characteristics of Cavity Form and Drag for Underwater High-speed Projectile[J].Journal of Ballistics,2009,21(2). |
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| Authors: | XIONG Tian-hong LI Tie-peng YI Wen-jun WU Jun-ji |
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| Affiliation: | XIONG Tian-hong1,LI Tie-peng2,YI Wen-jun1,WU Jun-ji1(1.National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China,2.Ordmance Mission,Naval Armament Department,Beijing 100841,China) |
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| Abstract: | Based on single-fluid variable-density mixture model of Rayleigh-Plesset equation,natural multi-phase cavitating flow model was presented.Cavitation flow around underwater high-speed projectile was investigated through numerical simulation using Fluent 6.0.The supercavity form and drag coefficient of four kinds of projectile model under high-speed were calculated,and the effects of projectile cavitator diameter,the slenderness ratio,which represents the ratio of length to diameter and cavitation number on t... |
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| Keywords: | high-speed projectile natural supercavity drag coefficient |
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