Hydraulic variables for rectangular rill channels characterized by different roughness height

This database refers to flow resistance measurements performed for rectangular flumes reproducing a fixed bed rill. The experimental flumes were prepared to obtain five different arrangements (smooth arrangement, gravel, clay-loam, sandy-loam, and clay soil). For each arrangement, the experimental runs were performed for five discharges and slopes ranging from 0.1% to 15% (only for the gravel arrangement the slopes range from 0.1% to 9%). Each experimental run was characterized by given values of slope s, discharge Q, and water depth h. The flow discharge was measured by the volumetric technique, while a point gauge placed in the flume axis, 2 m apart from the inlet, and having an accuracy of + 0.1 mm, was used to measure h.

本数据库收录了复现固定床细沟的矩形水槽水流阻力测量实验数据。实验共设置五种不同的床面构型：光滑构型、砾石、黏壤土、砂壤土与黏土。针对每种床面构型，实验均设置五种流量工况，坡度范围为0.1%至15%（仅砾石构型的坡度范围为0.1%至9%）。每组实验工况均记录了坡度s、流量Q与水深h的参数值。水流流量采用体积法测定；水深h则通过安装于水槽轴线、距进水口2m处的点式测深仪测量，其精度为+0.1 mm。