Turbulent flow over surfaces with spatially varying roughness

该项目旨在提高空间粗糙度转换对湍流的影响的理解。流过非光滑表面的流体影响着我们的日常生活，例如水流过管道，风吹过地球表面或飞机在空气中移动。表面粗糙度的存在深刻地影响这些流动。虽然工程师们已经学会有效地处理均匀分布的粗糙度，但在现实中很少遇到这种情况。相反，粗糙度会发生突然变化，例如在风电场的边缘或飞机上的铆钉处。本项目旨在研究这些重要的，但很少了解，湍流。潜在的好处包括改进模拟、更有效的车辆设计以及改进大气和气候模型。

This project aims to improve understanding of the effect of spatial roughness transitions on turbulent flows. Fluids flowing over non-smooth surfaces influence our daily lives, such as water moving through a pipe, wind blowing over the Earth's surface or aircraft moving through air. The presence of surface roughness profoundly influences these flows. Though engineers have learnt to deal effectively with evenly distributed roughness, this is seldom encountered in reality. Rather, there are abrupt changes in roughness, for example at the edges of wind-farms or at rivets on aircraft. This project aims to investigate these important, but little understood, turbulent flows. Potential benefits include improved simulation, more efficient vehicle design and improved atmospheric and climate models.