Modelling Transient Unsaturated Flow Problems Using Control Volume Numerical Methods (original) (raw)

2002

Abstract

ABSTRACT We develop an unsteady two-equation model which describes the water flow in unsaturated zones. The governing equations are based on general conservation laws of mass and momentum. Although the obtained equations are not amenable to being solved by analytical means, a control volume numerical solution using upwind scheme can be employed. In order to test the model equations, two examples of one- and two-dimensional water infiltration are simulated. The effects of discretization on spatial and temporal coordinates are demonstrated. Also, the results are compared with results of previous studies.

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