Connecting River To Sea By A
2-D Mathematical Model
Author(s)
A. Astaraki & F. Fallah
Abstract
A two dimensional mathematical model is presented to simulate flow and
suspended sediment transport in rivers. A two dimensional horizontal depth
average model computes the flow characteristics. The hydrodynamic model uses
a fully implicit finite difference numerical scheme with variable grid size. By
solving the equation of sediment transport, the sediment concentration will be
calculated. The depth variations could be computed by solving continuity
equation of sediment. In this Paper, verification of the model and ability of
Model in the field of connecting a river to the sea is shown by figures.
Keywords: mathematical modeling, suspended sediment transport, sea, river.
1 Introduction
In recent decades a lot of numerical and physical models have been developed in
the field of river engineering. Physical models are generally very timeconsuming,
costly and for many practical problems, impossible, while
mathematical models are becoming more popular because of low cost, flexibility
in design for changing different plans, ability to simulate riverbed deformation
under large scale and long term conditions and they also provide a large quantity
of information.
However any mathematical model is faced with some problems, for example
using concept of equilibrium sediment transport is an important problem in
mathematical models. In this model a 2-D mathematical model of flow and
suspended sediment transport has been developed for alluvial rivers in which
concept of nonequilibrium sediment transport is used. In the concept of
equilibrium suspended sediment transport, sediment transport capacity is
supposed to be equal with sediment concentration while alluvial rivers are
Keywords
mathematical modeling, suspended sediment transport, sea, river
Related Book
Other papers in this volume
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