Turbulent flow over surfaces with spatially varying roughness

该项目旨在提高对空间粗糙度转变对湍流影响的理解。在非光滑表面上流动的流体影响着我们的日常生活，比如流经管道的水、吹过地球表面的风或通过空气的飞机。表面粗糙度的存在对这些流动产生了深远的影响。尽管工程师们已经学会了有效地处理均匀分布的粗糙度，但这在现实中很少遇到。相反，粗糙度有突变，例如在风力发电场的边缘或飞机上的铆钉。该项目旨在研究这些重要但鲜为人知的湍流。潜在的好处包括改进的模拟、更高效的车辆设计以及改进的大气和气候模型。

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.