期刊
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
卷 220, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jweia.2021.104845
关键词
Atmospheric boundary layer; Ekman boundary layer; Coriolis force; Wind veering; Large eddy simulation; Wind characteristics; Wind profile
资金
- National Natural Science Foundation of China [51978593]
- Research Grants Council of Hong Kong [CityU 11207519, CityU 11200420]
- City University of Hong Kong [9667218]
This study reproduces a realistic one-thousand-meter height atmospheric boundary layer with wind veering phenomenon and examines the effects of the Coriolis force and terrain type on wind and turbulence characteristics. Results show that the Coriolis effect varies in three orthogonal directions, with a more significant impact on turbulence integral length scale in the streamwise direction.
The wind veering phenomenon caused by the Coriolis force is frequently observed in the atmospheric boundary layer (ABL) and may affect the wind and turbulence characteristics of the ABL, thus influencing the wind effects on structures, especially high-rise structures. To investigate the Coriolis effect, this study firstly reproduces a realistic thousand-meter height ABL with a wind veering phenomenon by large eddy simulation. The simulated vertical profiles of mean wind speed and twist angle are validated against field observations. Three typical terrain types are considered in the simulation and the corresponding vertical profiles of wind and turbulence characteristics are presented and discussed. Furthermore, an additional group of reference cases not considering the Coriolis force is also considered for comparison to quantify the Coriolis effects on the wind and turbulence characteristics. The results show that both the Coriolis force and terrain type significantly affect the vertical profiles of mean wind speed and turbulence intensity in three orthogonal directions. The Coriolis effect on the turbulence integral length scale is more appreciable in the streamwise direction than in the other two orthogonal directions. The vertical profiles of wind speed and turbulence properties in the ABL simulated with consideration of the Coriolis force may serve as a crucial reference for the more reliable wind-resistant design of high-rise structures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据