Development of Effective Approaches to the Large-Scale Aerodynamic Testing of Low-Rise Buildings

低层建筑大规模空气动力测试有效方法的开发

• 批准号: 0928740
• 负责人: Arindam Chowdhury
• 金额: $ 15万
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0928740&HistoricalAwards=false
• 关键词: Development; Effective; Approaches; Large; Scale

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)The objective of this project is to develop innovative methods for simple and accurate large-scale aerodynamic testing of low-rise buildings. The research will seek answers to fundamental bluff body aerodynamics issues of interest in civil engineering applications by investigating flow features and effects not reproducible in conventional facilities. These include: effects of important non-dimensional fluid mechanics parameters (e.g., high Reynolds numbers); flow behavior around typical building edges; high-frequency and controlled low-frequency turbulence fluctuations; sudden internal pressure changes; non-stationary gusts; and sharp wind direction changes. The research will result in substantial improvements in the estimation of aerodynamic response and provide the prerequisites for developing realistic standard provisions on wind loads. The objectives will be pursued through controlled and repeatable experiments at large geometric scales, in a new state-of-the-art Wall of Wind (WoW)testing facility capable of producing flow speeds of up to 63 m/s (140 mph). Active and passive controls aimed at producing flows similar to real wind flows will be designed on the basis of detailed wind speed data collected in hurricanes and extratropical storms. The research will develop the scientific underpinnings of low-rise building design, resulting in sustainable communities with enhanced human safety and reductions of property loss and insurance costs. The project will advance discovery by performing cutting-edge research while promoting learning through collaborations from K-12 to undergraduate and graduate students and community college teachers. The activities will involve female students through the Women in Engineering Projects Teams program, African-American students from Florida Memorial University, and Hispanic students from Miami Dade College. A trained workforce will be developed to transfer technology from academia to applications. Results will be disseminated through journals and conferences, WoW workshops, and reports to policy makers and committees, to advance the state of the art and improve current practices and standards.

该奖项是根据2009年《美国回收与再投资法》（公法111-5）资助的，该项目的目的是开发创新方法，以简单准确的大规模大规模空气动力学测试对低层建筑物的简单大规模空气动力学测试。该研究将通过调查传统设施中不可重现的流动特征和效果来寻求土木工程应用中基本虚张声势的空气动力学问题的答案。其中包括：重要的非二维流体力学参数（例如，高雷诺数）的影响；典型建筑边缘周围的流动行为；高频和受控的低频湍流波动；内部压力突然变化；非平稳阵风；和锋利的风向变化。这项研究将导致空气动力响应的估计估计，并为开发有关风负荷的现实标准规定提供了先决条件。目标将通过在大型几何尺度上进行的可控且可重复的实验来实现，并在最先进的风（WOW）测试设施中，能够产生高达63 m/s（140 mph）的流速。旨在产生类似于真实风流的流动的主动和被动控制将根据在飓风和热带风暴中收集的详细风速数据设计。这项研究将发展低层建筑设计的科学基础，从而导致可持续性社区增强人类安全性并减少财产损失和保险成本。该项目将通过从K-12到本科和研究生和社区大学老师的合作来促进学习，通过进行尖端研究来提高发现。这些活动将通过女学生通过工程项目团队，佛罗里达纪念大学的非裔美国学生和来自迈阿密戴德学院的西班牙裔学生涉及女学生。将开发培训的劳动力将技术从学术界转移到应用程序。结果将通过期刊和会议，WOW研讨会以及向政策制定者和委员会报告，以提高最新状态并改善当前的实践和标准。