Author(s)

N. Haie

Abstract

x-t Plane development using mass-momentum conservation N. Haie Civil Engineeering Department, University of Minho, 4800 Guimardes, Portugal ABSTRACT A mathematical model of the flow phenomena, with the moving tip, was developed for the unsteady gradually varied flow using the complete forms of mass and momentum conservation relations, which form the non-linear hyperbolic type equations to be solved. An implicit finite-difference scheme using an Eulerian system of fluid flow led to the simulation of x-t planes of different surface flow situations. Dry, wet, and transition infiltration functions were used to describe the temporal and spatial variability of infiltration rates. Model performance for different flow regimes was verified. INTRODUCTION Interest in the numerical description of surface flow has been encouraged by popular concern with water resources management. Attempts which are likely to develop a more desirable outcome to describe sur

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