小直径制导炸弹翼片的流固耦合仿真分析  

Fluid-solid Coupling Simulation Analysis of Wings of Small Diameter Guided Munitions

作　　者：郑永乾[1] 郭锐[1] 刘荣忠[1] 

机构地区：[1]南京理工大学机械工程学院智能炸弹技术国防重点学科实验室,南京210094

出　　处：《兵工自动化》2016年第2期66-71,共6页Ordnance Industry Automation

基　　金：国家自然科学基金"青年科学项目"(11102088)

摘　　要：为研究小型制导炸弹的翼片变形对气动特性的影响,采用双向流固耦合方法计算一种三弹翼气动布局的制导炸弹在柔性翼时的气动参数及气动变形,利用FLUENT计算其在刚性翼时的气动参数。仿真结果表明:2种翼片的制导炸弹升力系数、阻力系数及升阻比随攻角和速度变化的趋势相同;柔性翼的制导炸弹升力系数与升阻比都大于刚性翼,阻力系数小于刚性翼,最大变形量与攻角成线性关系。采用柔性翼的制导炸弹气动特性优于刚性翼。Study the influence of the deformation of the wing on the aerodynamic characteristics of the small guided bomb. Use bi-directional fluid-solid coupling method to calculate the aerodynamic parameter and deformation of flexible-wing of three-wing configuration guided bomb, and calculate the aerodynamic parameters of rigid wing by FLUENT. The simulation results indicate that the two wings of guided bomb lift coefficient, drag coefficient and lift to drag ratio along with the trend of the angle of attack and the change of speed in the same; guided bombs of the flexible wing lift coefficient and lift drag are larger than that of the rigid wing; drag coefficient of flexible wing is less than rigid wing; the maximum deformation of the flexible wing is linear with the angle of attack. The aerodynamic characteristic of the guided bomb with flexible wing is better than that of the rigid wing.

关 键 词：刚性翼 柔性翼 气动参数 气动变形 

分 类 号：TJ765.4[兵器科学与技术—武器系统与运用工程]