Wind tunnel measurements of concentration and velocity in urban geometries with trees

This dataset contains concentration and velocity mesurements performed in the aerodynamic wind tunnel of the Ecole Centrale de Lyon (France). An idealized urban district was simulated by an array of blocks, and two rows of model trees were arranged inside a street. Reduced scale trees were chosen to mimic a realistic shape and aerodynamic behaviour.Three different spacings between the trees were considered: "zero" (no trees), "half" (14 cm distance between the tree trunks) and "full" (7 cm distance between the tree trunks). The dataset includes: concentration and velocity measurements performed within a street canyon, under various geometries and wind directions; the characterization of the boundary layer above the buildings; the characterization of the tree drag. The detailed description of the dataset is contained in the document Info_dataset.pdf本数据集收录了法国里昂中央理工学院（Ecole Centrale de Lyon）气动风洞（aerodynamic wind tunnel）内开展的浓度与速度测量实验数据。研究团队采用块体阵列模拟理想化城市街区，并在街道内部布置两排模型树木。本次实验选用缩比树木模型，以复现真实树木的外形与空气动力学特性。实验共设置三种树木间距工况："zero"（无树木）、"half"（树干间距14cm）与"full"（树干间距7cm）。 本数据集涵盖以下内容： 1. 不同几何构型与风向条件下街道峡谷（street canyon）内的浓度与速度测量数据； 2. 建筑物上方边界层（boundary layer）的特征表征结果； 3. 树木阻力（tree drag）的特性表征数据。 本数据集的详细说明详见Info_dataset.pdf文档。