Tominaga Yoshihide, Shirzadi Mohammadreza
Wind and Fluid Engineering Research Center, Niigata Institute of Technology, 1719 Fujihashi, Kashiwazaki, Japan.
Chemical Engineering Department, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi Hiroshima, Japan.
Data Brief. 2021 Oct 23;39:107504. doi: 10.1016/j.dib.2021.107504. eCollection 2021 Dec.
This paper presents a high tempo-spatial resolution dataset of the three-dimensional (3D) turbulent flow over a group of generic buildings with and without a high-rise building measured in an atmospheric boundary layer wind tunnel. This dataset is the basis of the study reported in the research article entitled "Wind tunnel measurement of three-dimensional turbulent flow structures around a building group: Impact of high-rise buildings on pedestrian wind environment" by Tominaga and Shirzadi (2021), which investigates the effect of a high-rise building on the pedestrian wind environment formed around the surrounding buildings and its interaction mechanism with the street flow at the pedestrian height. The instantaneous velocity vectors over a vertical central plane and a horizontal plane and the time-averaged surface pressure over the central building were measured for two cases consisting of a low-rise (Case 1H) and high-rise (Case 3H) buildings, which are in the center of a group of eight low-rise cubic buildings at a regular arrangement with an urban planar area density of 0.25. Data acquisition procedure and measurements details are explained in this paper. Time-averaged values of three velocity components and surface pressure coefficients, and turbulent statistics, i.e. turbulent kinetic energy and normal component of the Reynolds stresses are presented. Furthermore, the time-averaged two-dimensional (2D) velocity magnitude over the pedestrian height are presented for evaluating the gust factor. The presented database is useful for the validation of computational fluid dynamics (CFD) models and turbulent model developments for urban and building-related studies.
本文展示了一组在大气边界层风洞中测量的、有或没有高层建筑的通用建筑群上三维（3D）湍流的高时空分辨率数据集。该数据集是Tominaga和Shirzadi（2021年）发表的研究文章《建筑群周围三维湍流结构的风洞测量：高层建筑对行人风环境的影响》中所报道研究的基础，该研究调查了高层建筑对周围建筑物形成的行人风环境的影响及其在行人高度处与街道气流的相互作用机制。针对由低层（案例1H）和高层（案例3H）建筑组成的两种情况，测量了垂直中心平面和水平平面上的瞬时速度矢量以及中心建筑上的时间平均表面压力，这两座建筑位于一组八座规则排列的低层立方体建筑的中心，城市平面面积密度为0.25。本文解释了数据采集过程和测量细节。给出了三个速度分量和表面压力系数的时间平均值以及湍流统计量，即湍流动能和雷诺应力的法向分量。此外，还给出了行人高度处的时间平均二维（2D）速度大小，用于评估阵风系数。所呈现的数据库对于验证计算流体动力学（CFD）模型以及城市和建筑相关研究中的湍流模型开发很有用。
