Author(s)

R.W. Barber, R.V. Pearson, A.P. Roberts & W.I. McKee

Abstract

This paper describes a numerical model for simulating depth-averaged flow in an estuary. The governing hydrodynamic equations are solved using finite- differences on a boundary-fitted non-orthogonal grid which facilitates an accurate representation of the coastline at the expense of more complex hydrodynamic equations. The continuity and momentum equations are solved explicitly by forward-time central-space differencing on a staggered grid. A flooding and drying algorithm has been implemented to allow for the changing shape of the flow domain as the tide ebbs and flows. The versatility of the numerical scheme is demonstrated by simulating tidal flow in the Humber Estuary on the east coast o

Keywords