Abstract

SAUCEDO, Heber; ZAVALA, Manuel  and  FUENTES, Carlos. Complete hydrodynamic model for border irrigation. Tecnol. cienc. agua [online]. 2011, vol.2, n.2, pp.23-38. ISSN 2007-2422.

A numerical model for border irrigation is presented-based on the internal coupling of Saint-Venant and Richards equations-that makes it possible to describe the advance, wetting, depletion, and recession phases. The solution of Saint-Venant equations is approached by a finite-difference Lagrangian scheme, while for Richards equation finite elements for the space discretization and implicit finite-differences for the time discretization are used. The results obtained with the model application lead to conclude that the model can be used for border irrigation design.

Keywords : advance phase; wetting phase; depletion phase; recession phase; internal numerical coupling.

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