Author(s)

M. Yasi & R.J. Keller

Abstract

The simulation of the bed evolution around a groyne was investigated by linking a developed sediment transport model (STM-2D) to the FAST-2D flow model. The present state of sediment transport relationships, in particular the relationships for calculating bed-shear stress and bed-load transport rate, was evaluated as an essential step for the computational simulation of the groynes performance. Sever difficulties were encountered in the development and validation of this model—nevertheless, substantial progress was made. This paper discusses the major uncertainties in the simulation process. It is concluded that a modified bed-shear stress relationship is not sufficient for simulating realistically the bed features behind the groyne. The development of a conceptual method for calculating bed-sh

Keywords