Turbulence theory and applications: an adaptive wavelet approach

湍流理论与应用：自适应小波方法

• 批准号: 217003-2008
• 负责人: Kevlahan, Nicholas
• 金额: $ 1.82万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=454054
• 关键词: Turbulence; theory; applications; adaptive; wavelet

Our world is mostly moving fluid. Seventy percent of the earth's surface is covered in water, and we live at the bottom of an atmosphere 1 000 km thick. Life itself depends on blood circulation in our arteries and veins. Our technology and well-being depends on machines that manipulate or move through fluids. We rely on efficient weather and climate prediction. These fluids are usually turbulent: seemingly chaotic, but also containing large coherent vortices. Examples include storms, flow over aircraft wings, wind blowing around large buildings, and blood flow through the heart. Although turbulent flows are ubiquitous in nature and technology, they are poorly understood: there is still no theory of turbulence. We do not even know how to accurately calculate strongly turbulent flows on a computer.

我们的世界基本上是流动的流体。地球表面的70%被水覆盖，我们生活在1000公里厚的大气层底部。生命本身依赖于动脉和静脉的血液循环。我们的科技和福祉依赖于操纵或移动流体的机器。我们依赖于有效的天气和气候预测。这些流体通常是湍流的：看似混乱，但也包含着大的连贯漩涡。例如风暴，飞机机翼上的气流，大型建筑物周围的风，以及流经心脏的血液。尽管湍流在自然界和技术中无处不在，但人们对它们的理解却很少：目前还没有关于湍流的理论。我们甚至不知道如何在计算机上精确地计算强湍流。