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

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 􀀅 were verified. By studying t...

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Main Authors:	A. Sommella, A. Comegna, M. Palladino, A. Coppola
Format:	Article
Language:	English
Published:	PAGEPress Publications 2013-09-01
Series:	Journal of Agricultural Engineering
Subjects:	soil hydraulic characterization, soil water diffusivity, laboratory method.
Online Access:	http://www.agroengineering.org/index.php/jae/article/view/410

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spelling	doaj-3c6388798188461ea58bdeff6045c95f2020-11-25T02:58:35ZengPAGEPress PublicationsJournal of Agricultural Engineering1974-70712239-62682013-09-01442s10.4081/jae.2013.410367A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soilA. SommellaA. ComegnaM. PalladinoA. CoppolaWithin 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 􀀅 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(􀀅) to be easily arrived at.http://www.agroengineering.org/index.php/jae/article/view/410soil hydraulic characterization, soil water diffusivity, laboratory method.
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	A. Sommella A. Comegna M. Palladino A. Coppola
spellingShingle	A. Sommella A. Comegna M. Palladino A. Coppola A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil Journal of Agricultural Engineering soil hydraulic characterization, soil water diffusivity, laboratory method.
author_facet	A. Sommella A. Comegna M. Palladino A. Coppola
author_sort	A. Sommella
title	A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil
title_short	A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil
title_full	A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil
title_fullStr	A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil
title_full_unstemmed	A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil
title_sort	simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil
publisher	PAGEPress Publications
series	Journal of Agricultural Engineering
issn	1974-7071 2239-6268
publishDate	2013-09-01
description	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 􀀅 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(􀀅) to be easily arrived at.
topic	soil hydraulic characterization, soil water diffusivity, laboratory method.
url	http://www.agroengineering.org/index.php/jae/article/view/410
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A simplified method to determine the first primary drying and wetting curves of water diffusivity of unsaturated soil

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