| 水下高速射弹超空泡减阻特性研究 |
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| 引用本文： | 易文俊,王中原,熊天红,周卫平.水下高速射弹超空泡减阻特性研究[J].弹道学报,2008,20(4). |
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| 作者姓名： | 易文俊 王中原 熊天红 周卫平 |
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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. 海军装备研究院,北京,100073 |
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| 基金项目： | 国防重点实验室基金
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| 摘 要： | 基于Rayleigh-Plesset单一介质可变密度混合多相流模型,利用Fluent6.2对带圆盘空化器射弹的阻力特性进行了数值研究.计算了圆盘空化器射弹的空泡形态,分析了空化器直径、空化数、射弹长径比、超空泡形态对射弹超空泡减阻特性的影响,计算了高速射弹的自然超空泡减阻率.结果表明,空化数变化对射弹的阻力特性影响不大;头部空化器直径对射弹阻力系数影响明显;在超空泡状态下,增大射弹长径比,射弹阻力系数减小;高速射弹的超空泡减阻率可达95%以上.
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| 关 键 词： | 高速射弹 减阻 超空泡 空化器 空化数 |
Research on Drag Reduction Characteristics of a Underwater High-speed Supercavitation Projectile |
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| YI Wen-jun,WANG Zhong-yuan,XIONG Tian-hong,ZHOU Wei-ping.Research on Drag Reduction Characteristics of a Underwater High-speed Supercavitation Projectile[J].Journal of Ballistics,2008,20(4). |
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| Authors: | YI Wen-jun WANG Zhong-yuan XIONG Tian-hong ZHOU Wei-ping |
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| Affiliation: | YI Wen-jun1,WANG Zhong-yuan1,XIONG Tian-hong1,ZHOU Wei-ping2(1.National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China,2.Navy Academy of Armament,Beijing 100073,China) |
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| Abstract: | Based on the Rayleigh-Plesset homogeneous hypothesis and the compressible mixture multiphase model,numerical investigations of the natural supercavitation drag characteristics of a high-speed projectile with disk cavitator was performed by commercial CFD software Fluent6.2.The natural supercavitation profile of a disk cavitator was computed.The influences of disk cavitator diameter,cavitation number,the ratio of length to diameter,and supercavitation profiles on its drag reduction characteristics were analy... |
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| Keywords: | high-speed projectile drag reduction supercavitation cavitator cavitation number |
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