Abstract

ARRAGAN T., Fanny B  and  CHIPANA R, René.   Mathematical modeling wet bulb under superficial drip irrigation in soils of the Bolivian Altiplano. RIIARn [online]. 2015, vol.2, n.1, pp.45-54. ISSN 2409-1618.

ABSTRACT In a drip irrigation is necessary to size by wet bulb geometry and moisture to determine physical and hydrological characteristics of a soil which is formed by one emitter. In this sense, the objective was to perform mathematical modeling of wet bulb through the technique of surface drip irrigation. Assays were performed on soils with the method of a point source in free field at Experimental Station of Choquenaira, which belongs to the central altiplano of Bolivia. Mathematical modeling forthe saturated zone was the sizing of equations having a quadratic equation for the maximum diameter reached of 1l h-¹, for a time of eight hours is 28 cm. forthe calculated and 29 cm. forthe observed on field. On the unsaturated zone, the calculation of vertical depth and horizontal distance was performed by the method of multiple correlation, the value calculated for a flow of 5l h-¹ through four hours was 21 cm. and the observed was 20 cm. The volumetric moisture content was determined by sizing equations, taking tridiagonal matrices. Then, for a flow of 3l h-¹ calculated volumetric moisture was 0.52 and 0.54 forthe observed one.

Keywords : Drip irrigation; Wet bulb; Saturated zone; Unsaturated zone; Point source.

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