The role of leading-edge vortex (LEV) in lift generation for revolving wings is not well-understood. We aim to discern the effect of LEVs and TEVs on revolving flat and twisted wings through a detailed analysis of planar flow in the wing sections. We present a simple quasi-two-dimensional model to estimate the lift distribution over the wingspan by coupling the potential flow and lifting line theory (modified to incorporate the effect of wing rotation) and incorporating the presence of vortices. This semi-analytical model estimates a fairly accurate sectional force trend for low-moderate AoA at each wing section and subsequently the net lift force developed on the wing. Three-dimensional numerical simulations verify the developed theory. The present results underscore the role of LEVs and TEVs in the mechanism of lift generation. Furthermore, the proposed theoretical model serves as a non-intrusive method to estimate the lift distribution over the wingspan from a three-dimensional velocity field.

前缘涡流 (LEV) 在旋转机翼升力产生中的作用尚不清楚。我们的目标是通过详细分析机翼截面中的平面流动来辨别 LEV 和 TEV 对旋转平面和扭曲机翼的影响。我们提出了一个简单的准二维模型，通过耦合势流和升力线理论（修改为结合机翼旋转的影响）并结合涡流的存在来估计翼展上的升力分布。这个半解析模型估计了每个机翼截面上低中 AoA 的相当准确的截面力趋势，以及随后在机翼上产生的净升力。三维数值模拟验证了发展的理论。目前的结果强调了 LEV 和 TEV 在升力产生机制中的作用。此外，