Mechanism of Sediment Transport in Uni-directional, Bi-Directional Flows

摘要：

The aim of the present study is to investigate the relationship between flow strength and sediment discharge. The appropriate definition of energy dissipation rate E in Bagnolds theorem is discussed and it is found that the sediment transport rate g, in unidirectional and bi-directional flows can be well predicted when E is defined as the product of bed shear stress τo and near bed velocity u. . Then the linear relationship between u. E and the sediment transport rate is examined using measured data. The good agreement between measured and predicted values indicates that the phenomena of sediment transport can be reasonably described by the near bed flow characteristics.

作者: Shuqing Yang

作者单位: School of Civil, Mining and Environmental Engineering,Univ.of Wollongong, NSW2522, Australia

会议类型: 国际会议

会议名称: International Symposium on Hydraulic Physical Modeling and Field Investigation(2010 水工模型试验和原型观测技术国际研讨会)

会议地点: 南京

会议语种:英文

页码: 171-177

在线出版日期: 2010-09-13（万方平台首次上网日期，不代表论文的发表时间）