Author(s)

R.V. Pearson & R.W. Barber

Abstract

Numerical simulation of flooding and drying in a depth-averaged boundary-fitted tidal model R.V. Pearson, R.W. Barber Department of Civil Engineering, University of Salford, Salford, England ABSTRACT This paper describes a finite-difference scheme for the solution of the shallow water equations on arbitrary non-orthogonal boundary-fitted grids. The transformed hydrodynamic equations are solved on a MAC type computational mesh which differs from conventional approaches in that both the U- and V- velocity components are prescribed at the mid-points of cell faces. Special attention is given to the simulation of the exposure and re-submergence of the inter-tidal zones which cause the flow perimeter to change shape. The versatility of model is demonstrated by examining the flow in the Humber Estuary on the east coast of England. The results indicate that the numerical scheme has considerable promise for simulating the hydrodynamics of awkwardly shaped estua

Keywords