Non-equilibrium crystallization in freezing porous media: Numerical solution

Bronfenbrener, Leonid

doi:10.1016/j.coldregions.2012.09.002

Cited by 11 publications

(7 citation statements)

References 12 publications

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“…Therefore, a linear relation is only considered reliable under static conditions (Takashi et al, 1982). However, the freezing and thawing of an open system is more likely to be a nonequilibrium thermodynamic process in many cases (Bronfenbrener, 2013). Wood (1990) suggested a pressure difference between the ice and aqueous phases throughout the freeze-thaw cycle and ice deformation consecutively, making it difficult to approach equilibrium.…”

Section: Driving Forces Of Water Migrationmentioning

confidence: 99%

Water Migration and Segregated Ice Formation in Frozen Ground: Current Advances and Future Perspectives

Qingbai

Zhang

et al. 2022

Front. Earth Sci.

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A characteristic of frozen ground is a tendency to form banded sequences of particle-free ice lenses separated by layers of ice-infiltrated soil, which produce frost heave. In permafrost, the deformation of the ground surface caused by segregated ice harms engineering facilities and has considerable influences on regional hydrology, ecology, and climate changes. For predicting the impacts of permafrost degradation under global warming and segregated ice transformation on engineering and environmental, establishing appropriate mathematical models to describe water migration and ice behavior in frozen soil is necessary. This requires an essential understanding of water migration and segregated ice formation in frozen ground. This article reviewed mechanisms of water migration and ice formation in frozen soils and their model construction and introduced the effects of segregated ice on the permafrost environment included landforms, regional hydrological patterns, and ecosystems. Currently, the soil water potential has been widely accepted to characterize the energy state of liquid water, to further study the direction and water flux of water moisture migration. Models aimed to describe the dynamics of ice formation have successfully predicted the macroscopic processes of segregated ice, such as the rigid ice model and segregation potential model, which has been widely used and further developed. However, some difficulties to describe their theoretical basis of microscope physics still need further study. Besides, how to describe the ice lens in the landscape models is another interesting challenge that helps to understand the interaction between soil ice segregation and the permafrost environment. In the final of this review, some concerns overlooked by current research have been summarized which should be the central focus in future study.

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Section: Driving Forces Of Water Migrationmentioning

confidence: 99%

Water Migration and Segregated Ice Formation in Frozen Ground: Current Advances and Future Perspectives

Qingbai

Zhang

et al. 2022

Front. Earth Sci.

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“…4) Soil freezing may be more inclined to be a non-equilibrium (irreversible) thermodynamic process because of the influence of such factors as relaxation time (Bronfenbrener, 2013), water migration, and deformations of ice and the soil skeleton. Compared to the equilibrium state, a higher pore water pressure and a lower ice pressure occur in a non-equilibrium state.…”

Section: Application Conditions Of the Gcce In Soil Freezingmentioning

confidence: 99%

Discussion of the applicability of the generalized Clausius–Clapeyron equation and the frozen fringe process

Zhang

Yang

2015

Earth-Science Reviews

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“…В работе [11] предлагается следующая модель для описания процесса замораживания влагонасыщенной породы с учетом влияния остаточной влажности на кинетику фазового перехода: Идентификация параметра a0 проводилась с использованием того же вычислительного алгоритма, что и при определении коэффициентов температуропроводности. По результатам идентификации параметр a0 принял значение 184,2.…”

Section: рис5 результаты исследования влияния размера конечного элемента (сверху) и ширины интервала фазового перехода (снизу) на результunclassified

“…Параметр a0 определяет вид функции остаточной влажности и не имеет физического смысла. Функции для определения коэффициента диффузии и характерного времени кристаллизации были взяты из [11].…”

Investigation of non-equilibrium phase transition in freezing porous media

Prokhorov¹,

Zhelnin²,

Kostina³

et al. 2018

Вест. ПГУ. Физика

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Non-equilibrium crystallization in freezing porous media: Numerical solution

Cited by 11 publications

References 12 publications

Water Migration and Segregated Ice Formation in Frozen Ground: Current Advances and Future Perspectives

Water Migration and Segregated Ice Formation in Frozen Ground: Current Advances and Future Perspectives

Discussion of the applicability of the generalized Clausius–Clapeyron equation and the frozen fringe process

Investigation of non-equilibrium phase transition in freezing porous media

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