Spray Drift data from Flat fan and air Induction nozzles in IRSTEA Wind tunnel

These data correspond to sedimented deposition in IRSTEA wind tunnel for different types of nozzles (Flat Fan Albuz AXI and Air induction Albuz CVI 02 - 2.5 bar) at different heights (40 - 60 - 80 cm) and different wind speeds (2-4-7.5 m/s) Wind tunnel has a cross section of 2 x 3 x 9m (h x w x l) and sedimented droplets are collected on a distribution test bench (acc. ISO 5682) with grooves of 5cm width, 10 cm depth and 3m length. Deposition is weighted after a certain volume (Max capacity of filling tubes 500ml) or a certain time (ex 30 min). Each column gives the deposition value (expressed in relative flowrate) according to the settings inidicated on the first rows. The last row corresponds to the addition of deposition and provides the recovery rate on the distribution test bench. Sprayed liquid is water. 4 nozzles spaced 50 cm are set on a boom at the defined height and pressure. Input flowrate and pressure are controlled along the experiment. Wind speed is controlled with a 2D US anemometer, air temperature and humidity are controlled with ad hoc sensors and with the help of heating/cooling system.

本数据集对应法国农业科学研究院（IRSTEA）风洞试验中的雾滴沉降量数据，试验采用两类喷嘴：平扇型阿尔布兹（Albuz）AXI喷嘴与进气型阿尔布兹（Albuz）CVI 02喷嘴，工作压力设定为2.5巴；试验变量包含3组高度（40、60、80 cm）与3组风速（2、4、7.5 m/s）。该风洞横截面尺寸为2m（高）×3m（宽）×9m（长），沉降的雾滴收集于符合ISO 5682标准的分布试验台，该试验台带有宽度5cm、深度10cm、长度3m的收集槽。雾滴沉降量的称重可通过两种触发条件实现：当收集管装填量达到最大容积（500ml）时，或经过固定时长（如30分钟）后。各列数据为对应试验参数下的沉降量，以相对流量表示，其取值依据首行标注的试验设置确定；最后一行为总沉降量，用于计算分布试验台的雾滴回收率。试验喷洒介质为纯水，试验系统采用4个间距50cm的喷嘴安装于喷杆，喷杆高度与工作压力按预设参数调整。试验过程中对输入流量与工作压力进行实时调控；风速通过二维超声风速仪（2D US anemometer）精准控制，空气温湿度则通过专用传感器配合加热/冷却系统实现调控。