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首页> 外文期刊>Journal of Fluids and Structures >Numerical study of two-dimensional heaving airfoils in ground effect
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Numerical study of two-dimensional heaving airfoils in ground effect

机译：地基中二维起伏翼型的数值研究

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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.
机译：在这项研究中，基于势流的离散涡旋方法用于研究机翼在刚性表面和渐进水波上的地面起伏（WIG）的起伏翼型。分析了三种类型的振荡，包括刚性表面上的强制谐波振荡，水波上的谐波振荡和水波上的自激振荡。另外，考虑了尾流涡流的卷起。给出了在刚性表面和入射水波上具有三种振荡形式的非恒定翼型的数值结果。有文献报道的数值结果令人满意。有趣的是，可以观察到水肿现象。

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