标题： 纵向振荡来流中高度柔性仿生机翼的非定常载荷减缓 显示英文标题

标题： Unsteady load alleviation on highly flexible bio-inspired wings in longitudinally oscillating freestreams

摘要： 本研究深入探讨了高度柔性NACA 0012翼型的空气动力学行为，灵感来自鸟类羽毛以应对阵风。我们首先通过实验和数值方法研究了刚性翼型上的非定常流动，然后仅通过数值方法探索了引入翼型柔性的意义。我们的研究结果强调了复合材料在减轻顺流阵风下翼型振荡空气动力学力方面的潜力。这种行为归因于其能够使层流分离泡失稳，促进更稳定的湍流边界层。尽管直接的鸟类证据仍然有限，但推测在自然界中，这种机制可能减轻不必要的翼型拍打，优化扰动环境中的能量消耗。 显示英文摘要

摘要： This study delves into the aerodynamic behavior of a highly flexible NACA 0012 aerofoil, drawing inspiration from avian feathers to handle a gust. We first examined unsteady flow on a rigid wing both experimentally and numerically and then explored the implications of introducing wing flexibility purely numerically. Our findings underscore the potential of composite materials in alleviating the oscillating aerodynamic forces on a wing under a streamwise gust. This behavior is attributed to its capacity to destabilize the laminar separation bubble, fostering a more stable turbulent boundary layer. While direct avian evidence remains limited, it is postulated that in nature, such mechanisms could mitigate undesired wing flapping, optimizing energy consumption in perturbed environments.