Modelling preferential flow of water in soils : a two-phase approach for field conditions

Hosang, Jürg

doi:10.1016/0016-7061(93)90039-N

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Modelling preferential flow of water in soils : a two-phase approach for field conditions
Authors:	Hosang, Jürg
DOI:	10.1016/0016-7061(93)90039-N
Published in:	Geoderma
Volume(Issue):	58
Issue:	3-4
Page(s):	149
Pages to:	163
Issue Date:	Oct-1993
Publisher / Ed. Institution:	Elsevier
ISSN:	0016-7061 1872-6259
Language:	English
Subjects:	Water; Transport; Soil
Subject (DDC):	630: Agriculture
Abstract:	A conceptual two-phase model for preferential flow of water through field soils is proposed. The first phase represents times of redistribution and low infiltration, which does not generate preferential flow. Times of heavy infiltration, inducing preferential flow, are handled by the second phase. The Richards equation is applied as the governing flow equation for both phases and preferential flow is allowed for by increasing the hydraulic conductivity of the soil during the second phase. The parameters of the model were estimated by use of different techniques, including a transient field experiment and the subsequent solution of the inverse problem. The model was tested and a reasonably good agreement between simulated and experimental data was obtained. When long-term effects of preferential flow, rather than an event-specific representation of the involved processes are in focus, the presented model seems to be an adequate approach. More specific parameter estimation techniques are a possibility to further improve the applicability of the model.
URI:	https://digitalcollection.zhaw.ch/handle/11475/6102
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Data Analysis and Process Design (IDP)
Appears in collections:	Publikationen School of Engineering

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Hosang, J. (1993). Modelling preferential flow of water in soils : a two-phase approach for field conditions. Geoderma, 58(3-4), 149–163. https://doi.org/10.1016/0016-7061(93)90039-N

Hosang, J. (1993) ‘Modelling preferential flow of water in soils : a two-phase approach for field conditions’, Geoderma, 58(3-4), pp. 149–163. Available at: https://doi.org/10.1016/0016-7061(93)90039-N.

J. Hosang, “Modelling preferential flow of water in soils : a two-phase approach for field conditions,” Geoderma, vol. 58, no. 3-4, pp. 149–163, Oct. 1993, doi: 10.1016/0016-7061(93)90039-N.

HOSANG, Jürg, 1993. Modelling preferential flow of water in soils : a two-phase approach for field conditions. Geoderma. Oktober 1993. Bd. 58, Nr. 3-4, S. 149–163. DOI 10.1016/0016-7061(93)90039-N

Hosang, Jürg. 1993. “Modelling Preferential Flow of Water in Soils : A Two-Phase Approach for Field Conditions.” Geoderma 58 (3-4): 149–63. https://doi.org/10.1016/0016-7061(93)90039-N.

Hosang, Jürg. “Modelling Preferential Flow of Water in Soils : A Two-Phase Approach for Field Conditions.” Geoderma, vol. 58, no. 3-4, Oct. 1993, pp. 149–63, https://doi.org/10.1016/0016-7061(93)90039-N.