Unsteady aerodynamics of wings in complex environments

大型民用飞机承受极端载荷，即，在湍流和阵风中。避免晴空湍流（CAT）是一个很大的挑战，而对流层和平流层下的突发不稳定湍流对亚音速机翼气动特性的影响还没有得到足够的研究。特别是，很少有研究如何湍流涡流所产生的地形周围的机场位于山谷中会与爬升/下降的飞机相互作用。该项目的目的是研究CAT（或阵风），飞机机翼和形成的尾流之间的相互作用。我们的目标是了解这些相互作用的基本机制，并显着提高其预测的准确性，因此有一个更好的风险评估的CAT或阵风。这些问题的解决将有利于其他应用，例如大型风力涡轮机在阵风大气中运行，无人机在极其复杂的城市环境中飞行，赛车前翼在前车产生的尾流中失去性能。本项目将使用计算流体动力学（CFD）方法来研究大尺度湍流对飞机机翼在巡航过程中的性能特性的影响，起飞和降落条件。将使用南安普顿大学开发的CFD软件进行数值模拟。

The large civil aircraft experiences extreme loads i.e., during turbulence and gusts. It is a great challenge to avoid clear-air turbulence (CAT), and the implications of sudden erratic turbulence on the aerodynamic characteristics of a subsonic wing in the troposphere and lower stratosphere have not been investigated enough. In particular, there is very little research into how turbulent eddies generated by the terrain that surrounds an airport located in a valley would interact with a climbing/descending aircraft. The aim of this project is to investigate the interactions between CAT (or gusts), the aircraft wing, and the formed wake flow. We aim to understand the underlying mechanisms for these interactions, and significantly enhance the accuracy of their prediction, and therefore to have a much better risk assessment of the CAT or gusts. Having tackled these problems will be beneficial to other applications, such as large wind turbines operating in gusty atmosphere, drones flying in extremely complex urban environments, front wings of race car loosing performance in wake generated by a preceding car.This project will use Computational Fluid Dynamics (CFD) approach to investigate the effects of large-scale turbulence on the performance characteristics of an aircraft wing during cruise, take-off and landing conditions. Numerical simulations will be carried out using the developed CFD software at the University of Southampton.