Numerical studies of static aeroelastic effects on grid fin aerodynamic performances | |
Huang CD(黄程德); Liu W(刘文); Yang GW(杨国伟) | |
发表期刊 | CHINESE JOURNAL OF AERONAUTICS |
2017-08-01 | |
卷号 | 30期号:4页码:1300-1314 |
ISSN | 1000-9361 |
摘要 | The grid fin is an unconventional control surface used on missiles and rockets. Although aerodynamics of grid fin has been studied by many researchers, few considers the aeroelastic effects. In this paper, the static aeroelastic simulations are performed by the coupled viscous computational fluid dynamics with structural flexibility method in transonic and supersonic regimes. The developed coupling strategy including fluid-structure interpolation and volume mesh motion schemes is based on radial basis functions. Results are presented for a vertical and a horizontal grid fin mounted on a body. Horizontal fin results show that the deformed fin is swept backward and the axial force is increased. The deformations also induce the movement of center of pressure, causing the reduction and reversal in hinge moment for the transonic flow and the supersonic flow, respectively. For the vertical fin, the local effective incidences are increased due to the deformations so that the deformed normal force is greater than the original one. At high angles of attack, both the deformed and original normal forces experience a sudden reduction due to the interference of leeward separated vortices on the fin. Additionally, the increment in axial force is shown to correlate strongly with the increment in the square of normal force. (C) 2017 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. |
关键词 | Aeroelasticity Fluid-structure Interpolation Grid Fin Mesh Deformation Radial Basis Function |
DOI | 10.1016/j.cja.2017.04.013 |
URL | 查看原文 |
收录类别 | SCI ; EI ; CSCD |
语种 | 英语 |
WOS记录号 | WOS:000410620500003 |
关键词[WOS] | Radial Basis Functions ; Computational Fluid-dynamics ; Interpolation ; Configurations ; Reduction ; Missile ; Speeds |
WOS研究方向 | Engineering |
WOS类目 | Engineering, Aerospace |
CSCD记录号 | CSCD:6043262 |
课题组名称 | LMFS流固耦合与数值计算(LHO) |
论文分区 | 二类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/70063 |
专题 | 流固耦合系统力学重点实验室 |
通讯作者 | Yang GW(杨国伟) |
推荐引用方式 GB/T 7714 | Huang CD,Liu W,Yang GW. Numerical studies of static aeroelastic effects on grid fin aerodynamic performances[J]. CHINESE JOURNAL OF AERONAUTICS,2017,30,4,:1300-1314. |
APA | Huang CD,Liu W,&Yang GW.(2017).Numerical studies of static aeroelastic effects on grid fin aerodynamic performances.CHINESE JOURNAL OF AERONAUTICS,30(4),1300-1314. |
MLA | Huang CD,et al."Numerical studies of static aeroelastic effects on grid fin aerodynamic performances".CHINESE JOURNAL OF AERONAUTICS 30.4(2017):1300-1314. |
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