Experimental clay-laden density flow velocity and deposit data from the Eurotank laboratory

this dataset contains flume experiment data from a series of runs that were performed at the eurotank laboratory of utrecht university. it includes velocity data as well as photographs that were taken from the deposits emplaced by the density flows inside the flume. the flume was 3.7 m long, 0.22 m wide, and 0.5 m high with glass side walls. for the experiments, the slope was adjusted to 6, 8, and 9.5 degrees. before the runs, mixtures composed of 1) sand, silt, clay, and water or, 2) sand, clay, and water, were prepared and stirred for approximately 30 minutes to 2 hours in a 0.45 m3 mixing tank and the flume was filled with tap water. the sediment volume concentration was varied between 9%, 15%, and 21% and contained 2/3 sand and 1/3 clay for the runs without silt and 1/3 sand, 1/3 silt, and 1/3 clay, for the runs including silt. the mixtures were then pumped with a discharge rate of 10 or 15 m3/h into the flume. velocity data was obtained using two ultrasonic doppler velocity profiler probes (uvp duo mx, 1 mhz) which were placed at 0.7 m and 2.7 m distance from the inlet, at a height of 0.11 m above the bed, and with an abgle of 60 degree to the bed, facing up stream. this dataset was used in hermidas et al., 2018 to classify clay-rich subaqueous density flow structures.

本数据集收录了乌得勒支大学欧元罐实验室进行的一系列实验的 Flume 实验数据。数据中不仅包含了流速数据，还包括了从 Flume 内部密度流沉积物上拍摄的影像。该 Flume 的尺寸为长 3.7 米，宽 0.22 米，高 0.5 米，两侧为玻璃墙。实验中，斜率被调整为 6 度、8 度和 9.5 度。在实验开始前，由 1) 砂、粉砂、黏土和水或 2) 砂、黏土和水组成的混合物在 0.45 立方米的混合罐中搅拌了大约 30 分钟至 2 小时，随后用自来水填充 Flume。沉积物体积浓度在 9%、15% 和 21% 之间变化，对于不含粉砂的实验，其混合物由三分之二砂和三分之一黏土组成；对于包含粉砂的实验，则由三分之一砂、三分之一粉砂和三分之一黏土组成。随后，这些混合物以 10 或 15 立方米/小时的排放速率被泵入 Flume。流速数据是通过放置于入口处 0.7 米和 2.7 米距离、距离床面 0.11 米高、与床面成 60 度角且面向上游的两个超声波多普勒流速剖面仪（UVP Duo MX，1 MHz）获得的。此数据集被用于 Hermidas 等人于 2018 年的研究中，用于对富含黏土的亚水密度流结构进行分类。