Print Email Facebook Twitter Morphological computations for suspended sediment transport Title Morphological computations for suspended sediment transport: unsteady sediment transport Author Kerssens, P.J.M. Corporate name Waterloopkundig Laboratorium Date 1978-03 Abstract The present report gives a description of the mathematical model for suspended sediment transport. The model can be used to simulate the movement of suspended sediment in a two-dimensional (longitudinal and vertical) flow field. It can also be applied to determine bed level changes caused by any human interference in the regime or geometry of a river or estuary. Both for non-uniform and unsteady conditions the morphological behaviour in time can be described. It must be emphasized, however, that the method is restricted to non-cohesive and nearly uniform sediment material. In this report the attention is paid mainly to the sediment diffusion equation, the derivation of the sediment diffusion coefficient, the boundary conditions and the numerical solution method, while some of the computational aspects are described extensively. The derivation of the equations governing the motion of the water and the continuity of the bed-sediment is only briefly dealt with, as this can be found elsewhere, together with the computational method to solve the equations and to compute the bed-level changes. As a conclusion of the present investigation the mathematical model to simulate the morphological behaviour of a stream, described in this report can be considered as a practical tool for many engineering problems. In particular its applicability has already been proved for the computation of sedimentation in trenches with relatively gentle slopes, sand-traps, etc.. Moreover by a verification of the mathematical model on a flume investigation on this subject, the results turned out to be rather reliable. The applicability and reliability of the bed-load model, whose equations and computational method have been used to determine the hydraulic conditions and the bed-level changes, have, however, been shown before. Subject sediment transportriverssuspended material Classification TLE500300 To reference this document use: http://resolver.tudelft.nl/uuid:f59d8b43-0f3c-4670-8433-7f34c4618d89 Publisher Waterloopkundig laboratorium (Deltares) Source WL rapport S78-6 Part of collection Hydraulic Engineering Reports Document type report Rights (c) 1978 WL Delft Files PDF WL-S78-6.pdf 3.58 MB Close viewer /islandora/object/uuid:f59d8b43-0f3c-4670-8433-7f34c4618d89/datastream/OBJ/view