超声速下栅格舵展开过程数值模拟  

The Deployment Process Simulation of Grid Fin Under Supersonic Airflow

作　　者：周培培[1] 郭少杰[1] 王斌[1] 

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《弹箭与制导学报》2016年第2期26-28,36,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：栅格舵从折叠到展开的过程中气动特性变化剧烈,对展开可靠性和导弹整体气动特性的影响都比较大。针对栅格舵这种复杂的构造形式,生成了带有棱柱层的非结构网格,再结合重叠网格技术对栅格舵导弹超声速绕流流场进行了数值模拟,计算结果与风洞试验结果吻合较好。在此基础上,对超声速下栅格舵动态展开过程的非定常流场进行了数值模拟,分析了栅格舵导弹动态气动特性的变化规律。Rapid variation of aerodynamic characteristics in deployment makes great impact on unfolding reliability and aerodynamic charac -teristics of grid fin missile .In this paper , a high quality unstructured grid with prismatic layers generated for such a complex geometry , and chimera grid was applied to combine computation domain around body and grid fins , then N-S equations were solved numerically to simulate supersonic flow field of grid fin missile .The simulation results show excellent agreement with the experiment data .Based on grid strategy and numerical method , the deployment process of grid fins was simulated under supersonic airflow , and dynamic aerodynamic characteris-tics were obtained .

关 键 词：栅格舵 非结构重叠网格 数值模拟 展开过程 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]