Numerical study of two-dimensional heaving airfoils in ground effect

被引：18
|
作者：
Liang, Hui [1 ,2 ]
Wang, Xijun [1 ]
Zou, Li [1 ]
Zong, Zhi [1 ]
机构：
[1] Dalian Univ Technol, Sch Naval Architecture Engn, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
[2] Norwegian Univ Sci & Technol, Dept Marine Technol, N-7049 Trondheim, Norway
来源：
JOURNAL OF FLUIDS AND STRUCTURES | 2014年 / 48卷
关键词：
Unsteady motion; Wing in ground effect; Discrete vortex method; Roll-up; Water bump; RATIO LIFTING SURFACES; UNSTEADY MOTION; AERODYNAMICS; WATER; FLOW; PROXIMITY;
D O I：
10.1016/j.jfluidstructs.2014.02.009
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, a potential-flow-based discrete vortex method is used to investigate heaving airfoils for a wing in ground effect (WIG) over a rigid surface and over progressive water waves. Three types of oscillations are analyzed, including forced harmonic oscillations over a rigid surface, harmonic oscillations over water waves and self-excited oscillations over water waves. In addition, the roll-up of the shed wake vortices is considered. Numerical results for unsteady airfoils with the three types of oscillations over a rigid surface and over incident water waves are presented. Satisfactory agreement with numerical results reported in the literature is documented. Interestingly, the phenomenon of water bump can be observed. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：188 / 202
页数：15
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