Author(s): Tu Haizhou; Nobuyuki Tamai
Linked Author(s): Nobuyuki Tamai
Keywords: No Keywords
Abstract: Silting up of sediments in alluvial rivers can be disastrous to flood control as well as to other human activities. It is necessary, thus, to improve our knowledge about the sediment-concentration profiles in flood flows. In the paper, an introduction of the past contributions is followed by an analytical study of the sediment-concentration profiles in flood flows. First, some assumptions are made and the initial and boundary conditions defined. Then assuming the logarithmic law for velocity distribution and a linear shear-stress distribution, the sediment- diffusion coefficient is derived. Subsequently, based on the histograms of suspended load and of flow discharge in natural rivers, a concept of sediment-wave celerity is introduced, and the basic equation simplified. Finally the analytical solution is presented.
Year: 1993