AplicaÃÃo dos modelos poro neutro e mÃdia geomÃtrica na estimativa da condutividade hidrÃulica de um latossolo / Comparison between the models of geometric average and neutral pore for the determination of the unsaturated hydraulic conductivity of a latossolo

AUTOR(ES)

Gilberto Comiran

DATA DE PUBLICAÇÃO

2006

RESUMO

In this work, it is shown an application of a model to obtain the hydraulic conductivity of soils no saturated using concepts Fractal Geometry and the laws of Laplace and of Poiseuille. For the obtaining of the soil water retention curve it was used the camera of pressure of Richards and the experimental data of hydraulic conductivity in function of the soil water content were obtained through the Method of Hillel with the tensiometry use, according to a potency model. The equation van Genuchten with their parameters was used for the obtaining of the hydraulic conductivity. The application of the models of the Geometric Average and of the Neutral Pore suggested by Fuentes was shown simple and capable of predicting the hydraulic conductivity satisfactorily.

ASSUNTO(S)

engenharia agricola condutividade hidrÃulica modelo fractal curva de retenÃÃo da Ãgua no solo fractal model soil water retention curve hydraulic conductivity

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