https://doi.org/10.4081/jae.2013.410

A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil

Vol. 44 No. s2 (2013): Proceedings of the 10th Conference of the Italian Society of Agricultural Engineering
Published: 8 September 2013
soil hydraulic characterization, soil water diffusivity, laboratory method.
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Authors

A. Sommella
A. Comegna
alessandro.comegna@unibas.it
M. Palladino
A. Coppola
Within the framework of a research project examining the spatial variability of hydraulic characteristics of soil intended for irrigation, some of the more frequently used analytical expressions describing the laws linking diffusivity D to the water content of the soil ô€€… were verified. By studying the flow field of soil samples tested in the laboratory, under one-dimensional wetting and drying cycles, it has been found that the laws of hydraulic diffusivity of the exponential types can be ascribed to them. Finally, a simplified laboratory method was proposed which, with the aid of nomographs, allows the definition of the law D(ô€€…) to be easily arrived at.

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How to Cite

Sommella, A. (2013) “A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil”, Journal of Agricultural Engineering, 44(s2). doi: 10.4081/jae.2013.410.

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