ERIES-The aerodynamics of platooning and overtaking vehicles

A series of experiments was conducted in the closed-circuit Atmospheric Boundary Layer Wind Tunnel at Eindhoven University of Technology, featuring up to three Heavy Ground Vehicle (HGV) models at a reduced geometric scale of 1:20. The aim of this test was threefold. First, surface pressure and wind loads were investigated on an isolated HGV model for various crosswind conditions (yaw angles of 0° - no crosswind, 15°, 30° and 45°). Second, three HGV models were arranged in a platoon formation and the effect on surface pressures and wind loads of aforementioned crosswind conditions was studied on the platoon. Wake flow characteristics were assessed for the platoon at a yaw angle of 0°. Third, the three HGVs were also used to simulate an overtaking manoeuvre by iteratively moving the first and third model to mimic scenarios that are likely to occur while one HGV overtakes another. In total 44 configurations were assessed for the overtaking manoeuvre, for which surface pressure and wind loads were monitored.<br>In addition to the Metadata report, raw data time series of surface pressures, wake flow velicites, and resulting loads are provided here, as well as appraoch flow conditions, free-stream reference velocities and ambient conditions for the conducted measurements.

本数据集依托埃因霍温理工大学（Eindhoven University of Technology）闭环式大气边界层风洞开展了一系列实验，实验可容纳最多3台按1:20几何缩比制作的重型车辆（Heavy Ground Vehicle, HGV）模型。本次实验的研究目标分为三部分：
其一，针对孤立重型车辆模型，在不同侧风工况（偏航角0°——无侧风、15°、30°与45°）下，探究其表面压力与风荷载特性；
其二，将3台重型车辆模型排列为编队阵型，针对上述侧风工况，研究其对编队表面压力与风荷载的影响；同时针对偏航角为0°的编队工况，开展尾流流动特性评估；
其三，通过迭代移动第一台与第三台重型车辆模型，模拟重型车辆超车时的典型场景，以此开展超车工况实验；本次超车工况共涵盖44种配置方案，全程监测表面压力与风荷载数据。

除元数据报告外，本数据集还提供了本次实验采集的表面压力、尾流流速与合成荷载的原始时间序列数据，同时包含来流条件、自由流参考风速以及实验环境参数。