摘要
为研究不同船尾和尾翼剖面形状对阻力的影响,用CFD数值模拟方法,以三维N-S方程为出发方程,采用S-A湍流模型,对6种不同船尾和尾翼剖面形状的超远程制导炮弹的绕流场进行了数值模拟,并对计算结果进行了比较分析.结果表明,尾翼厚度及剖面前后缘钝度对阻力影响较大.研究结果为外形优化设计提供依据.
Based on three-dimensional Navier-Stokes equations closed with Spalart-Allmaras （S-A） turbulence model, the computational fluid dynamics （CFD） numerical simulation was used to investigate the drag characteristics of extended range guided munition（ERGM） having different stern and tail sectional shapes. Through simulation the flow field structures and computational aerodynamic characteristics were obtained. The results showed that thickness of tails and radius of tail section were important to impress the drag characteristics will provide evidence to analyze the drag characteristics and the results will provide evidence to optimize the configuration of ERGM in engineering design.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2008年第2期104-107,共4页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目(200807152)
关键词
超远程制导炮弹
阻力特性
数值模拟
船尾
剖面形状
extended range guided munition （ERGM）
drag characteristics
numerical simulation
stern
tail sectional shape
