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) | |
Source Publication | CHINESE JOURNAL OF AERONAUTICS |
2017-08-01 | |
Volume | 30Issue:4Pages:1300-1314 |
ISSN | 1000-9361 |
Abstract | 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. |
Keyword | Aeroelasticity Fluid-structure Interpolation Grid Fin Mesh Deformation Radial Basis Function |
DOI | 10.1016/j.cja.2017.04.013 |
URL | 查看原文 |
Indexed By | SCI ; EI ; CSCD |
Language | 英语 |
WOS ID | WOS:000410620500003 |
WOS Keyword | Radial Basis Functions ; Computational Fluid-dynamics ; Interpolation ; Configurations ; Reduction ; Missile ; Speeds |
WOS Research Area | Engineering |
WOS Subject | Engineering, Aerospace |
CSCD ID | CSCD:6043262 |
Department | LMFS流固耦合与数值计算(LHO) |
Classification | 二类 |
Ranking | 1 |
Citation statistics |
Cited Times:3[CSCD]
[CSCD Record]
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Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/70063 |
Collection | 流固耦合系统力学重点实验室 |
Corresponding Author | Yang GW(杨国伟) |
Recommended Citation 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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