文献类型：期刊文献

英文题名：Accessibility Study of a Compact Wind Tunnel with an Unequal Spacing Grid for the Outdoor Wind Environment

作者：Ma, Xiaojun[1];Zhao, Yu[2];Wen, Xueying[3];Chen, Jiujiu[1]

第一作者：马晓钧

通讯作者：Chen, JJ[1]

机构：[1]Beijing Union Univ, Coll Biochem Engn, Beijing 100023, Peoples R China;[2]Univ Pittsburgh, Dept Civil & Environm Engn, Pittsburgh, PA 15260 USA;[3]Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Coll Biochem Engn, Beijing 100023, Peoples R China.|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

年份：2022

卷号：12

期号：12

外文期刊名：BUILDINGS

收录：;EI(收录号：20242816667179);Scopus(收录号：2-s2.0-85144864089);WOS:【SCI-EXPANDED(收录号:WOS:000900540000001)】；

基金：This research was funded by the China National Key R&D Program, grant number 2018YFC0705204.

语种：英文

外文关键词：outdoor wind environment; compact wind tunnel; atmospheric boundary layer; gradient wind

摘要：One of the key issues in architectural design and regional planning is to create a safe and comfortable outdoor building environment, which calls for more studies. Wind tunnel experiments and computational fluid dynamic (CFD) simulations are the primary methods for the current studies. The airflow and boundary conditions are controllable for the wind tunnel experiment, and the data is reliable. In most wind tunnel platforms, spires and roughness elements are applied to create the gradient wind of the atmospheric boundary layer, leading to the oversized, high construction cost, and complex operation. In this paper, in order to explore a simple method for measuring and studying the outdoor building wind environment using wind tunnels, a compact wind tunnel platform adopting grids with unequal spacing was designed and tested, based on the theoretical model of the atmospheric boundary layer. A comparison between the test results and the theoretical values indicated that this new wind tunnel platform could achieve a gradient wind field and is accessible in applying low-speed wind tunnels to the measurement and research of the building wind environment. The application case in a high-rise building of the central business district (CBD) region in Beijing, was presented in this paper. Compared with another analytical method, the CFD simulation, the compact wind tunnel revealed its applicability that could be used for predicting and evaluating the outdoor wind environment around the building. This compact wind tunnel is more flexible and convenient than the traditional ones, with a smaller size, easier construction and operation, and lower costs. Therefore, we suggest more applications of this compact wind tunnel platform in future experimental studies of outdoor wind environments.