Turbulent flow over surfaces with spatially varying roughness

粗糙度随空间变化的表面上的湍流

• 批准号: DP160102279
• 负责人: Prof Nicholas Hutchins
• 金额: $ 48万
• 依托单位: The University of Melbourne
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2016
• 资助国家: 澳大利亚
• 起止时间: 2016-04-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP160102279
• 关键词: Turbulent; flow; over; surfaces; spatially

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.

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会影响我们的日常生活，例如流经管道的水、吹过地球表面的风或在空气中移动的飞机。表面粗糙度的存在深刻地影响这些流动。尽管工程师已经学会了如何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，粗糙度会突然变化，例如在风电场的边缘或飞机上的铆钉处。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。