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.

该项目旨在提高人们对空间粗糙度过渡对湍流的影响的理解。流过非平滑表面的流体会影响我们的日常生活，例如水从管道中移动，风吹过地球的表面或飞机穿过空气。表面粗糙度的存在深远影响了这些流。尽管工程师学会了有效地处理均匀分布的粗糙度，但实际上很少遇到这。相反，粗糙度突然发生了变化，例如在风农的边缘或飞机上的铆钉上。该项目旨在调查这些重要但鲜明的动荡流。潜在的好处包括改进的模拟，更有效的车辆设计以及改善的大气和气候模型。