A study on buffeting force test and correlation based on active grid turbulence field

被引：0
|
作者：
Xiang D. [1 ]
Zhu L. [2 ]
Niu H. [1 ]
机构：
[1] Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, Changsha
[2] Hunan Road & Bridger Construction Group Corp, Changsha
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 08期
关键词：
Buffeting force; Integral length scale of wind fluctuations; Self-excited force; Span-wise correlation;
D O I：
10.13465/j.cnki.jvs.2020.08.018
中图分类号：
学科分类号：
摘要：
In order to study the correlation of buffeting forces on a bluff body, a rectangular cylinder was taken as an example. In the pulsating flow field of active grids, a pressure measurement method was applied to study the span-wise buffeting force under turbulent flow, combined with different correlation model fitting methods. The spatial correlation of buffeting force was compared with static and moving states to analyze the influence of the self-excited force on the correlation of the buffeting force, by decomposing the two forces with matlab. Two different force measurement methods (synchronous pressure measurement) were compared by a balance force test. The results show that the span-wise correlation of buffeting force decreases with the frequency and span spacing. Under the influence of aerodynamic self-excited force, the correlation was improved and larger than that of turbulence. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：123 / 130
页数：7
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