Three-dimensional vortical structures and their interaction over a low-aspect-ratio thin wing have been studied via particle image velocimetry at the chord Reynolds number of $$10^5$$ . The maximum lift of this thin wing is found at an angle of attack of $$42^\circ$$ . The flow separates at the leading-edge and reattaches to the wing surface, forming a strong leading-edge vortex which plays an important role on the total lift. The results show that the induced velocity of the tip vortex increases with the angle of attack, which helps reattach the separated flow and maintains the leading-edge vortex. Turbulent mixing indicated by the high Reynolds stress can be observed near the leading-edge due to an intense interaction between the leading-edge vortex and the tip vortex; however, the reattachment point of the leading-edge vortex moves upstream closer to the wing tip.

中文翻译：

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低展弦比薄机翼前缘涡与尖端涡的相互作用

三维涡结构及其在低展弦比薄机翼上的相互作用已经通过粒子图像测速在弦雷诺数 $$$10^5$$ 处进行了研究。这个薄机翼的最大升力是在攻角为 $$42^\circ$$ 时发现的。气流在前缘分离并重新附着到机翼表面，形成强大的前缘涡，对总升力起重要作用。结果表明，尖端涡的诱导速度随着迎角的增加而增加，这有助于重新附着分离的流动并保持前缘涡。由于前缘涡和尖端涡之间的强烈相互作用，可以在前缘附近观察到由高雷诺应力指示的湍流混合；然而，