二维贴壁射流冲刷水槽试验

Experiments of scour caused by a wall jet

有关二维贴壁射流冲刷的水槽试验开展的颇多，但多限于中径大于０．２ｍｍ的粗沙河床，因而在应用上有较大的局限性．为了丰富本领域的知识，作者进行了多组水槽试验，分别使用了中径为０．２７３、０．０５０和０．０３０ｍｍ的床沙．本文着重介绍试验情况及试验观测，成果分析将另文发表．

Numerous experiments have been conducted for scour caused by wall jets. However, coarse sediment (grain size larger than 0. 2 mm) were used in most of these studies. This has limited the applications of the experimental results. To enrich the knowledge of this field, the author has carried out several sets of experiments.' Bed materials used were 0. 273 mm, 0. 050 mm and 0. 030 mm. This paper introduces mainly the experiments and the observations. Analysis of the experimental results will be presented in another paper.