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

职业：沿海郊区粗糙次层中飓风和风雨的行为

• 批准号: 1055744
• 负责人: Forrest Masters
• 金额: $ 40.25万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-03-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1055744&HistoricalAwards=false
• 关键词: CAREER; Behavior; Hurricane; Wind; Driven

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.

该教师早期职业发展（CAREER）计划项目的研究目标是确定热带气旋表面风场，风驱动的雨特性和风荷载在建筑环境中。目标是确定粗糙壁湍流边界层和大尺度对流特征（如中涡旋、雨带核心下沉气流）中出现的局部相干特征如何影响地面风场特征和低层结构上的载荷。该项目将利用由佛罗里达海岸监测计划管理的仪表塔。 这些塔将进行改造，以收集湍流和风驱动的剖面测量，并将部署在沿海郊区社区，预计最具破坏性的风会发生。这些观测塔将位于数字飓风联盟部署的移动的多普勒雷达网络内，以确定高空对流特征是否会调节地面风结构。风场数据将与单户住宅的压力测量相结合，将峰值荷载条件与全谱风效应直接联系起来。该项目解决了飓风诱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规定、具有成本效益的损害缓解措施以及结构的弹性设计提供重要数据。该项目还将加强风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向研究生和本科生提供高级培训。来自飓风易发地区资源不足学校的中学教师将参加一项名为飓风灾害浸泡计划的试点计划。该方案预计将通过年度培训和25名中学教师积极参与项目研究，加强居住在沿着飓风易发海岸的7 500多名学生的6- 8年级课程。该计划旨在在项目持续时间之后保持可持续性;它将针对代表性不足的群体，并在下一代房主中培养备灾和积极减灾的文化。