Variation Characteristics of the Wind Field in a Typical Thunderstorm Event in Beijing

被引：6
作者：
Zhang, Ailin [1 ]
Zhang, Shi [1 ]
Xu, Xiaoda [2 ]
Zhong, Haibin [1 ]
Li, Bo [3 ]
机构：
[1] Beijing Univ Civil Engn & Architecture, Sch Civil & Transportat Engn, Beijing 100044, Peoples R China
[2] Cent Res Inst Bldg & Construction Co Ltd MCC, Beijing 100088, Peoples R China
[3] Beijing Jiaotong Univ, Sch Civil Engn, 3 Shangyuancun, Beijing 100044, Peoples R China
来源：
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 23期
基金：
中国国家自然科学基金;
关键词：
thunderstorm wind; measured data; wind field characteristics; wind field model; Beijing urban area; NONSTATIONARY; MODEL; AREA;
D O I：
10.3390/app122312036
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The understanding of wind field characteristics during thunderstorms is key to structural design for resistance to thunderstorms. In this paper, the directional thunderstorm wind model is adopted to analyze the characteristics of vertical variations of the wind field in a typical thunderstorm event in the Beijing urban area, based on the measured data. First, the longitudinal and lateral fluctuating wind speed components were decoupled and the change of direction was obtained. Then, variation of the wind speed, wind direction, turbulence intensity, turbulence integral length scale, and gust factor with the height and time were studied. The measured thunderstorm wind spectrum and the coherence function of horizontal longitudinal reduced turbulent fluctuations were analyzed and compared with empirical models. The results showed that the wind speed profile presented an obvious "nose shape" near the peak wind speed. The longitudinal turbulence integral scale was larger than the lateral one. The Von Karman spectrum is relatively effective in fitting the thunderstorm wind spectrum. Compared with synoptic winds, the gust factor during the pass of thunderstorm wind is larger, so it seems necessary to consider the influence of thunderstorm wind in engineering design.
引用
收藏
页数：16
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