CAREER: Unraveling the Spatial Structure of Turbulence in the Atmospheric Boundary Layer using Unmanned Aerial Vehicles

PI：Bailey，SeanProposal编号：1351411这项提议的重点是利用安装在无人机上的仪器来探索和模拟大气边界层(ABL)的结构。科学目标是直接观测ABL内流动结构(涡旋)中长度和时间尺度的层次结构，为这些涡流开发一个预测框架，并了解这些结构的动力学如何对ABL内的输送过程做出贡献。智力上的优点：拟议工作的智力价值在于解决湍流研究中最具挑战性的流动之一-ABL内的广泛空间尺度。这些测量结合了实验工具和分析技术，将填补传统ABL研究能力的空白，并创造对ABL组织和流动结构对传输过程的影响的新理解，例如污染物在大气中的扩散、热量和温度波动。这些实验所产生的知识将导致：(A)建立ABL中形成的气流结构的层次框架；(B)表征地形对这些结构行为的影响；以及(C)了解这些结构的动力学如何对大气边界层内的输送过程做出贡献。广泛的影响：我们的气候、农业和商业受到最接近地球表面的大气层内的湍流的影响，本提议的目标是破译这一层的混沌动力学，具有基本和实际意义。更好地了解这一科学领域可以改进天气和气候模式的建模、风力发电场的能源回收或追踪大气中的污染物。研究生、本科生和高中生将参与这个项目。该提案的教育和推广计划利用无人机(UAV)的普遍吸引力，以招募高中生参加STEM项目，激励本科生注册研究生项目，并在工程项目中留住本科生。具体地说，PI自2010年以来一直是肯塔基航空航天教育研究所(KIAE)的联合组织者，他将利用他与KIAE的职业教育活动来扩大机翼设计比赛，将KIAE高中生在肯塔基大学的实践学习练习包括在内。对于本科生，他正在计划开发边界层无人机实验，以表征大气湍流(BlueCat)团队设计，其中本科生将积极参与他的研究。

PI: Bailey, SeanProposal Number: 1351411The focus of this proposal is to explore and model the structure of the atmospheric boundary layer (ABL) using instrumentation mounted on Unmanned Aerial Vehicles. The scientific goals are to directly observe the hierarchy of length and time scales in flow structures (eddies) within the ABL, develop a predictive framework for these eddies, and understand how the dynamics of these structures contribute to transport processes within the ABL.Intellectual Merit:The intellectual merit of the proposed work rests on resolving a wide range of spatial scales within one of the most challenging flows in turbulence research - the ABL. These measurements, using a combination of experimental tools and analysis techniques, will fill a void in traditional ABL research capabilities and create new understanding of the ABL organization and of the effects of the flow structures on transport processes, such as pollutant dispersion, heat and temperature fluctuations in the atmosphere. The knowledge generated by these experiments will lead to (a) the development of a framework of the hierarchy of the flow structures which form in the ABL; (b) the characterization of the effects of the terrain on the behavior of these structures; and (c) the understanding of how the dynamics of these structures contribute to transport processes within the atmospheric boundary layer.Broader Impacts:Our climate, agriculture, and commerce are affected by the turbulence within the atmospheric layer closest to the earth surface, and this proposal's goal to decipher the chaotic dynamics of this layer has both fundamental and practical importance. Better understanding in this scientific area can lead to improvements in modeling weather and climate patterns, energy recovery in wind farms or tracking pollutants in the atmosphere. Graduate, undergraduate and high school students will participate in this project. The educational and outreach plan of this proposal leverages the popular appeal of drones (UAVs) to pursue recruiting high school students into STEM programs, motivate undergraduate students to enroll in graduate programs, and retain undergraduate students within engineering programs. Specifically, the PI is a co-organizer of the Kentucky Institute for Aerospace Education (KIAE) since 2010, and he will leverage his CAREER educational activities with KIAE to expand the wing design competition to include hands-on learning exercises for the KIAE high school students at the University of Kentucky. For undergraduate students, he is planning the development of Boundary Layer UAV Experiment for the Characterization of Atmospheric Turbulence (BLUECAT) team design, in which undergraduate students will become active with his research..