Coupled thermo-hydro-mechanical model for porous materials under frost action: theory and implementation

Liu, Zhen; Yu, Xiong

doi:10.1007/s11440-011-0135-6

Cited by 118 publications

(32 citation statements)

References 53 publications

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“…Note here that the air phase is taken into account in computation of the effective thermal properties of the four‐phase medium considered, although Richards assumptions lead to a formulation of water transfer in variably saturated porous media in which the air phase does not appear explicitly. Latent heat exchanges are handled with a simple apparent specific heat method …”

Section: Methodsmentioning

confidence: 99%

Water and energy transfer modeling in a permafrost‐dominated, forested catchment of Central Siberia: The key role of rooting depth

Orgogozo

Прокушкин

Pokrovsky

et al. 2019

Permafrost & Periglacial

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To quantify the impact of evapotranspiration phenomena on active layer dynamics in a permafrost‐dominated forested watershed in Central Siberia, we performed a numerical cryohydrological study of water and energy transfer using a new open source cryohydrogeology simulator, with two innovative features: spatially distributed, mechanistic handling of evapotranspiration and inclusion of a numerical tool in a high‐ performance computing toolbox for numerical simulation of fluid dynamics, OpenFOAM. In this region, the heterogeneity of solar exposure leads to strong contrasts in vegetation cover, which constitutes the main source of variability in hydrological conditions at the landscape scale. The uncalibrated numerical results reproduce reasonably well the measured soil temperature profiles and the dynamics of infiltrated waters revealed by previous biogeochemical studies. The impacts of thermo‐hydrological processes on water fluxes from the soils to the stream are discussed through a comparison between numerical results and field data. The impact of evapotranspiration on water fluxes is studied numerically, and highlights a strong sensitivity to variability in rooting depth and corresponding evapotranspiration at slopes of different aspect in the catchment.

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Section: Methodsmentioning

confidence: 99%

Water and energy transfer modeling in a permafrost‐dominated, forested catchment of Central Siberia: The key role of rooting depth

Orgogozo

Прокушкин

Pokrovsky

et al. 2019

Permafrost & Periglacial

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“…The similarity found between behavior of frozen soils and the behavior of unsaturated unfrozen soils is well observed and documented (Thomas et al, 2009, Liu andYu, 2011). Noting this similarities Nishimura et al (2009), proposed a coupled (THM) model to replicate the behavior of frozen soils.…”

Section: Flow Modeling In Unfrozen Soilsmentioning

confidence: 69%

Numerical Modeling of Frozen Soils

Shastri

Sánchez

2014

Geo-Congress 2014 Technical Papers

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A vast portion of the exposed land surface is covered by perennially frozen ground in the form of permafrost covers. Some typical problems associated with these frozen soils, amongst others are freezing of foundations; frost heaving and thaw settlement. These phenomena affect civil infrastructure and buildings in these permafrost regions. The void spaces in frozen soils are partially filled by ice and by unfrozen water. The amount of unfrozen water in a frozen soil depends on a number of factors, such as: freezing temperature, type of soil and pore size. A good understanding of the water transfer process in frozen soils and its interaction with the mechanical and thermal behaviors, are crucial for an accurate assessment of the behavior of these soils. The flow of unfrozen water in frozen soils can be explained using the concept of unsaturated water flow in soils utilizing the concept of cryogenic suction (i.e. difference between the ice and liquid pressures). This paper focuses mainly on the transfer of unfrozen water in frozen soils and its modeling. The approach is based on a formulation for unsaturated soils, which has been adapted to the particular conditions of frozen soils. Laboratory tests related to the flow of unfrozen water in permafrost is analyzed and discussed.

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“…When a frozen soil is subjected to a load, it will respond with an instantaneous deformation and a time-dependent deformation, and its stress-strain relationship can be described as the following (Lai et al, 2005;Liu and Yu, 2011;Shen and Landanyi, 1987;Thomas et al, 2009;Wang et al, 2005):…”

Section: Constitutive Relationshipmentioning

confidence: 99%

Experimental and numerical investigations on frost damage mechanism of a canal in cold regions

Zhang

Tian³

et al. 2015

Cold Regions Science and Technology

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Coupled thermo-hydro-mechanical model for porous materials under frost action: theory and implementation

Cited by 118 publications

References 53 publications

Water and energy transfer modeling in a permafrost‐dominated, forested catchment of Central Siberia: The key role of rooting depth

Water and energy transfer modeling in a permafrost‐dominated, forested catchment of Central Siberia: The key role of rooting depth

Numerical Modeling of Frozen Soils

Experimental and numerical investigations on frost damage mechanism of a canal in cold regions

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