CAREER: Behavior of Hurricane Wind and Wind-Driven Rain in the Coastal Suburban Roughness Sublayer

该学院早期职业发展(CALEAR)项目的研究目标是确定热带气旋地面风场、风致降雨特征和建筑环境中的风荷载。其目的是确定出现在粗糙壁湍流边界层中的局部化相干特征和更大尺度的对流特征(如中尺度涡旋、雨带核心下沉)如何影响地面风场特征和对低层结构的载荷。该项目将利用佛罗里达海岸监测计划管理的仪表塔。这些塔将进行改造，以收集湍流和风力驱动的剖面测量，并将部署在沿海郊区社区，那里预计会发生最具破坏性的风。这些观测塔将位于数字飓风联盟部署的移动多普勒雷达网内，以确定高空对流特征是否调制地面风结构。风场数据将与独户住宅的压力测量相结合，以直接将峰值负载条件与风效应的全谱相关联。该项目解决了飓风引发的风与工程结构相互作用的重要问题。该项目将为风洞和计算建模、评估建筑规范和标准中的现有条款、具有成本效益的减轻损害措施和结构的弹性设计提供重要数据。该项目还将加强风能工程和大气科学学科之间的互动。该项目将通过直接参与项目工作为研究生和本科生提供高级培训。来自飓风多发地区资源不足学校的中学教师将参与一项名为飓风危险沉浸计划的试点计划。该计划预计将通过25名中学教师的年度培训和积极参与项目研究，加强居住在飓风易发海岸的7500多名学生的6-8年级课程。该方案旨在在项目期限之后具有可持续性；它将针对代表性不足的群体，并在下一代房主中培养防灾和主动缓解的文化。

The research objective of this Faculty Early Career Development (CAREER) program project is to define the tropical cyclone surface wind field, wind-driven rain characteristics and wind loading in the built environment. The goal is to determine how localized, coherent features occurring in the rough-wall turbulent boundary layer and larger-scale convective features (such as meso-vortices, rainband core downdrafts) influence the surface wind field characteristics and loading on low-rise structures. The project will utilize the instrumented towers managed by Florida Coastal Monitoring Program. The towers will be retrofitted to collect turbulence and wind-driven profile measurements and will be deployed in coastal suburban communities where the most damaging winds are expected to occur. These observational towers will be located inside mobile Doppler radar networks that are deployed by the Digital Hurricane Consortium to determine if convective features aloft modulate the ground level wind structure. The wind field data will be coupled with pressure measurements on single-family homes to directly relate the peak load conditions to the full spectrum of the wind effects.The project addresses the important issue of the interaction of hurricane induced winds with engineered structures. The project will provide important data for wind tunnel and computational modeling, evaluation of the existing provisions in building codes and standards, cost effective damage mitigation measures, and resilient design of structures. The project will also strengthen interactions between the wind engineering and atmospheric science disciplines. The project will provide advanced training to graduate and undergraduate students through their direct involvement in the project work. Middle school teachers from under-resourced schools located in hurricane-prone areas will participate in a pilot initiative called the Hurricane Hazard Immersion Program. This program is expected to enhance the 6-8th grade curriculum of over 7500 students living along the hurricane prone coast through annual training and active participation of 25 middle school teachers in the project research. The program is designed to be sustainable beyond the project duration; it will target underrepresented groups and foster a culture of hazard preparedness and proactive mitigation among the next generation of homeowners.