Velocity data in two sharp bends on the Middle Yangtze River

We have invesitgated the 3D flow field in very large sharp bends of Middle Yangtze River (MYR) based on field measurements. We found that patterns of mean and secondary flows in sharp bends on MYR are similar as in smaller systems, and the reduced-order model of Blanckaert & de Vriend (2003, 2010) can resolve the flow field in river of this size, and thus this mode has been validated over the entire range of scales. The data here show the ADCP measured 3D velocities (X,Y,Z) at ten transects of the sharp bends of TG and ZZZ in the MYR.本研究基于现场实测数据，针对长江中游（Middle Yangtze River, MYR）巨型急弯河道的三维流场开展了调查分析。研究发现，长江中游急弯河道的主流与次生流流态与小型河道系统相似；Blanckaert与de Vriend于2003年、2010年提出的降阶模型可准确复现该尺度河道的流场，因此该模型在全尺度范围内均得到了有效验证。本数据集提供了长江中游TG与ZZZ急弯河段共10个断面处，通过声学多普勒流速剖面仪（Acoustic Doppler Current Profiler, ADCP）实测得到的三维流速（X、Y、Z分量）数据。

搜集汇总

背景与挑战

背景概述

该数据集包含长江中游TG和ZZZ两个急弯处基于现场ADCP测量的三维速度数据，覆盖十个横截面，用于验证河流急弯流场模型在大型河流系统中的适用性。数据以Excel格式提供，支持河流动力学研究，由长江水利委员会和武汉大学团队贡献，采用开放获取许可。