Abstract

SAUCEDO, Heber; ZAVALA, Manuel  and  FUENTES, Carlos. Border Irrigation Design with the Saint-Venant and Green & Ampt Equations. Tecnol. cienc. agua [online]. 2015, vol.6, n.5, pp.103-112. ISSN 2007-2422.

A design procedure for border irrigation is presented. The procedure is based on the use of Saint-Venant equations to describe water flow over the soil and the Green and Ampt equation to model water flow in the soil. The main advantage of the model presented is that its application requires very little computation time compared to a full hydrodynamic model using Saint- Venant equations to describe water flow over soil, internally coupled with the Richards equation to model water flow in the soil. The results obtained from applying the model to 10 types of different soils were used to generate operating design tables for border irrigation.

Keywords : Border irrigations; Saint-Venant equations; Green & Ampt equation; optimal flow.