Vortex Creation and Wing-Tip Geometry Dependencies
Vortex Creation and Wing-Tip Geometry Dependencies
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涡流创建和翼尖几何依赖性
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
E. Stumpf
中科院分区：
文献类型：
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作者：
R. Buffo;C. Wolf;Sebastian Dufhaus;R. Hörnschemeyer;E. Stumpf
本研究提出了实验3C-PIV研究的涡拓扑在翼尖。其目的是确定翼尖的几何方面，这对轴向速度分量的产生产生主要影响。不同的翼尖形状被认为是。使用典型的矩形圆形和平面形状以及具有圆形布局的形状。特别关注的是在翼尖处的涡流产生，在那里，涡量是由初级涡和在一定程度上由次级涡积累的。径向环流剖面的演变和逐渐增强的显示。尖端侧面的倒圆导致更强烈的涡流。增加布局的舍入具有相反的效果。涡拓扑结构的相关性，因此翼尖成形。在第二步中，计算和分析涡流中心处的真实的、无粘性以及粘性轴向速度分量。因此，翼尖的几何特征可以与翼尖处的涡流产生阶段期间轴向速度分量的产生和抑制有关。
This study presents experimental 3C-PIV investigations of the vortex topology at the wing-tip. The aim is to identify geometrical aspects of the wing-tip, which exert dominant influence on the production of the axial velocity component. Different wing-tip shapes are considered. Typical rectangular round and flat shapes as well as shapes, which feature a rounding of the layout are used. Special focus is placed upon vortex creation at the wing-tip, where vorticity is accumulated by primary and also to some extent by secondary vortices. The evolution and gradual enhancement of the radial circulation profile is displayed. A rounding of the side of the tip results in a more intensive vortex. An increasing rounding of the layout has the opposite effect. Correlation of vortex topology and therefore wing-tip shaping are shown. In a second step a calculation and analysis of the real, inviscid, as well as the viscid axial velocity component at the center of the vortex is performed. Therefore the geometrical features of the tip can be related to the production and suppression of the axial velocity component during the vortex creation phase at the wing-tip.