A study of hysteresis models for soil-water characteristic curves

Pham, Hung Q.; Fredlund, D. G.; Barbour, S. Lee

doi:10.1139/t05-071

Cited by 249 publications

(192 citation statements)

References 56 publications

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“…For the Pham et al (2005) model the parameter R SL = 1.0 was chosen as the measured boundary drying curves turned out to be approximately parallel to the boundary wetting curves. The parameter D SL was set to 0.2, as suggested by [7] for sands.…”

Section: Resultsmentioning

confidence: 99%

“…The Pham et al (2005) model [7] presented a method to predict the above mentioned parameter of equation (1) of the boundary drying curve without any further measurements. Furthermore they added the Fredlund and Xing correction factor [13] to the equation (1) in order to achieve a better prediction of the behaviour of the SWRC in the residual zone:…”

Section: Pham Et Al (2005) Modelmentioning

confidence: 99%

“…In equation (8) D SL is the distance between both boundary curves. Based on a study of numerous soils the parameters for sands can be set to R SL = 1.0 -2.0 and D SL = 0.2 -0.35 [7]. [7] suggested to estimate the residual suction with:…”

Section: Pham Et Al (2005) Modelmentioning

confidence: 99%

“…The hysteretic behaviour is then often predicted with empirical or physically based models [7,8,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

“…Based on the results of the experimental studies, three empirical models [7,10,11] are tested with respect to a suitable prediction of the boundary wetting curve. Presupposing the boundary drying curve is known.…”

Section: Introductionmentioning

confidence: 99%

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Experimental determination of the hysteretic behaviour of soil-water retention curve of silty sands

Angerer

Birle

2016

E3S Web Conf.

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Abstract. Shear behaviour of unsaturated silty sands is closely linked to the soil-water retention curve (SWRC). The SWRC depends beside the pore structure mainly on the hydraulic path. It hence shows hysteretic behaviour for wetting and drying cycles. This paper presents the results of the experimental determination of the boundary drying and wetting curve for two silty sands. The measurements were carried out using tensiometers at low suctions and the dew point method at high suctions. The influence of water content during compaction was studied by measuring the boundary drying and wetting curves for one silty sand compacted at two different water contents. The experimental results were compared to the predictions of 3 empirical models. The study showed that all models compare well to the experimental results for water contents above the residual water content. A modification was suggested to improve the performance at low water contents.

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Section: Resultsmentioning

confidence: 99%

Section: Pham Et Al (2005) Modelmentioning

confidence: 99%

Section: Pham Et Al (2005) Modelmentioning

confidence: 99%

“…The hysteretic behaviour is then often predicted with empirical or physically based models [7,8,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental determination of the hysteretic behaviour of soil-water retention curve of silty sands

Angerer

Birle

2016

E3S Web Conf.

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An estimate of energy dissipation due to soil-moisture hysteresis

McNamara

2014

Water Resour. Res.

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[1] Processes of infiltration, transport, and outflow in unsaturated soil necessarily involve the dissipation of energy through various processes. Accounting for these energetic processes can contribute to modeling hydrological and ecological systems. The welldocumented hysteretic relationship between matric potential and moisture content in soil suggests that one such mechanism of energy dissipation is associated with the cycling between wetting and drying processes, but it is challenging to estimate the magnitude of the effect in situ. The Preisach model, a generalization of the Independent Domain model, allows hysteresis effects to be incorporated into dynamical systems of differential equations. Building on earlier work using such systems with field data from the south-west of Ireland, this work estimates the average rate of hysteretic energy dissipation. Through some straightforward assumptions, the magnitude of this rate is found to be of O(10

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An estimation of the main wetting branch of the soil water retention curve based on its main drying branch using the machine learning method

Lamorski

Šimůnek

Sławiński

et al. 2017

Water Resources Research

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In this paper, we estimated using the machine learning methodology the main wetting branch of the soil water retention curve based on the knowledge of the main drying branch and other, optional, basic soil characteristics (particle size distribution, bulk density, organic matter content, or soil specific surface). The support vector machine algorithm was used for the models' development. The data needed by this algorithm for model training and validation consisted of 104 different undisturbed soil core samples collected from the topsoil layer (A horizon) of different soil profiles in Poland. The main wetting and drying branches of SWRC, as well as other basic soil physical characteristics, were determined for all soil samples. Models relying on different sets of input parameters were developed and validated. The analysis showed that taking into account other input parameters (i.e., particle size distribution, bulk density, organic matter content, or soil specific surface) than information about the drying branch of the SWRC has essentially no impact on the models' estimations. Developed models are validated and compared with well‐known models that can be used for the same purpose, such as the Mualem (1977) (M77) and Kool and Parker (1987) (KP87) models. The developed models estimate the main wetting SWRC branch with estimation errors (RMSE = 0.018 m3/m3) that are significantly lower than those for the M77 (RMSE = 0.025 m3/m3) or KP87 (RMSE = 0. 047 m3/m3) models.

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A study of hysteresis models for soil-water characteristic curves

Cited by 249 publications

References 56 publications

Experimental determination of the hysteretic behaviour of soil-water retention curve of silty sands

Experimental determination of the hysteretic behaviour of soil-water retention curve of silty sands

An estimate of energy dissipation due to soil-moisture hysteresis

An estimation of the main wetting branch of the soil water retention curve based on its main drying branch using the machine learning method

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