复式断面交汇水流滩槽交界水流特性试验研究

通过在室内自制水槽模型内布置网格,利用先进的声波多普勒流速仪（ADV）测取网格内各点流速。再把各点的流速数据输入软件,通过做切片云图和分析流速数据的方法,研究复式交汇河道滩槽交界水流流态及某一特征断面的剪应力分布。结果表明：滩槽交界附近存在一个流速间断面,在这个区域水流所受阻力较大;复式河道断面的平均流速与剪切应力呈线性关系。

Experiment Research on Water Flow Characteristics at Boundary of Trough in Junction Compound Channel

By using the interior self-made flume model, arranging the grid in the model and adopting advanced ADV, the velocity of points in the grid were measured. Then input the velocity data of each-point into software, throngh the slice images and analysis of velocity data, we studied the flow characteristic and distribution of sheer stear in one special section near the trough in juction compound channel. The result showed that there was a flow velocity cross-section and the flow resistance was much bigger. There was a linear relationship between the average velocity and shear stress in compound channel section.