Active Aerodynamic Control of Civil Structure Systems

土木结构系统的主动空气动力学控制

• 批准号: 9700387
• 负责人: Gary Dargush
• 金额: $ 28.02万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9700387&HistoricalAwards=false
• 关键词: Active; Aerodynamic; Control; Civil; Structure

9700387 Dargush The main objective of this work is to develop an active aerodynamic control system to mitigate vibrations in both the along and the across wind directions for tall, slender structures subjected to strong wind loads. The control system will use the energy of wind flows to supplement its power requirements. Five tasks will be undertaken: experimental wind tunnel studies on cross section models; modeling using single degree of freedom and coupled wake-body formulations; continuum modeling based on boundary element formulations; development of a control algorithm for parametrically excited systems; and assessment of full -scale performance potential. The results from this work will help improving, among others, the performance of tall structures located in sites where wind hazards are common, will enhance the understanding of controlling bluff body vortex shedding, as well as noise and vibration. ***

9700387 Darkland这项工作的主要目标是开发一种主动空气动力控制系统，以减轻受到强风载荷的高大细长结构的沿着和横风向振动。 控制系统将使用风的能量来补充其功率需求。 将进行五项任务：对横截面模型进行实验风洞研究;使用单自由度和耦合尾流-物体公式进行建模;基于边界元公式进行连续建模;为参数激励系统开发控制算法;评估全尺寸性能潜力。 这项工作的结果将有助于改善，除其他外，位于风的危险是常见的网站的高层建筑的性能，将提高控制海崖体涡脱落，以及噪音和振动的理解。 ***