Study of Interference Effects using Aerodynamics Control System and POD Analysis

利用空气动力学控制系统和 POD 分析研究干扰效应

• 批准号: 11650596
• 负责人: SUGANUMA Shinya
• 金额: $ 2.3万
• 依托单位: TOKYO INSTITUTE OF POLYTECHNICS
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650596/
• 关键词: Wake Buffeting; Interference Effects; POD Analysis; Aerodynamics Control System; Rotors; Wind Force for Across Wind; Wind Tunnel Tests; Shear Layer of Separate Flow; 風荷重; 建物群; 交番渦; 相互干渉

Where two adjoining high-rise buildings are subjected to longitudinal wind load, the downwind building receives wake buffeting which causes largely across-wind vibration. Wind tunnel tests have been performed on two longitudinally-aligned two-dimensional prisms. This study describes wind pressures acting on the down wind prism when rotors is installed to the upwind or downwind prism. The proper orthogonal decomposition (POD) analysis characterizes the spatio-temporal structure of randomly fluctuating pressure field. The observed fluctuating wind pressures are also analyzed by POD and essential effects of rotors are examined.

当两座相邻的高层建筑受到纵向风荷载时，顺风建筑受到尾流抖振，导致较大的横风振动。风洞测试已在两个纵向对齐的二维棱镜上进行。本研究描述了当转子安装到逆风或顺风棱镜时作用在顺风棱镜上的风压。本征正交分解（POD）分析表征了随机脉动压力场的时空结构。还通过 POD 分析了观测到的脉动风压，并检查了转子的基本影响。