WIT Press


Modelling Tide-induced Currents And Pollutant Transport Using A Generalised Curvilinear Coordinate System

Price

Free (open access)

Volume

15

Pages

12

Published

1996

Size

1,078 kb

Paper DOI

10.2495/CENV960251

Copyright

WIT Press

Author(s)

R.W. Barber & R.V. Pearson

Abstract

This paper describes a numerical model for simulating depth-averaged flow and pollutant transport in estuaries and coastal seas. The governing hydrodynamic equations are solved using finite-differences on a boundary- fitted non-orthogonal grid. The curvilinear approach provides an accurate representation of the complex shape of natural flow domains and therefore avoids the approximate * staircase' representation associated with models based on a regular Cartesian finite-difference grid. A two-dimensional Lagrangian particle model has also been developed to simulate depth-averaged pollution transport in well mixed estuaries. The governing advection-diffusion equation is first rearranged into a Fokker-Planck equation

Keywords