Vaezi Erfan, Madani S Amirreza S, Keshmiri Amir
Department of Aerospace Engineering, Sharif University of Technology, Azadi St., Tehran, 11155-1639, Tehran, Iran.
Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, Delft, 2629 HS, South Holland, The Netherlands.
Sci Rep. 2025 Jan 9;15(1):1417. doi: 10.1038/s41598-024-84453-6.
The use of winglet devices is an efficient technique for enhancing aerodynamic performance. This study investigates the effects of winglet cant angles on both the aerodynamics and aeroacoustics of a commercial wing, comparing them to other significant parameters using a parametric analysis. A Full Factorial Design method is employed to generate a matrix of experiments, facilitating a detailed exploration of flow physics, with lift-to-drag ratio (L/D) and the integral of Acoustic Power Level (APL) as the primary representatives of aerodynamic and acoustic performance, respectively. The RANS formulation, along with the [Formula: see text] Realizable model and the Broadband Noise Source (BNS) model, are utilized to accurately simulate subsonic flows numerically. The study begins by examining the pressure coefficient ([Formula: see text]) and APL distributions at various cant angles near the wingtip and root areas. The matrix of experiments is then analyzed to identify the most influential parameters based on the main effects of inputs and their two-way interactions. The results demonstrate that variations in winglet cant angle significantly alter the distribution of [Formula: see text] and APL along the span, particularly near the wingtip, and that cant angle strongly impacts overall performance, at times even outweighing atmospheric parameters such as pressure and temperature.
使用翼梢小翼装置是提高空气动力学性能的一种有效技术。本研究调查了翼梢小翼倾斜角对商用机翼的空气动力学和气动声学的影响，并通过参数分析将其与其他重要参数进行比较。采用全因子设计方法生成实验矩阵，以便详细探索流动物理特性，分别将升阻比（L/D）和声功率级积分（APL）作为空气动力学性能和声学性能的主要代表。利用雷诺平均 Navier-Stokes 方程（RANS）公式，结合[公式：见原文]可实现模型和宽带噪声源（BNS）模型，对亚音速流动进行精确的数值模拟。研究首先考察了翼尖和翼根区域附近不同倾斜角下的压力系数（[公式：见原文]）和 APL 分布。然后分析实验矩阵，根据输入的主效应及其双向相互作用确定最有影响的参数。结果表明，翼梢小翼倾斜角的变化显著改变了[公式：见原文]和 APL 沿翼展方向的分布，尤其是在翼尖附近，并且倾斜角对整体性能有强烈影响，有时甚至超过压力和温度等大气参数的影响。
