A review and evaluation of 39 thermal conductivity models for frozen soils

H He, GN Flerchinger, Y Kojima, M Dyck, J Lv - Geoderma, 2021 - Elsevier
Frozen soil thermal conductivity (λ eff) is a critical thermo-physical property that is required
for environmental, earth science, geotechnical and geo-environmental applications and …

Miscellaneous methods for determination of unfrozen water content in frozen soils

S Feng, J Chen, SB Jones, G Flerchinger, M Dyck… - Journal of …, 2024 - Elsevier
Frozen soil is a complex four-phase porous medium consisting of soil solid/rock, air,
unfrozen/liquid water and ice at the subzero temperatures. Freeze-thaw cycles change the …

Estimating the thermal conductivity of soils using six machine learning algorithms

KQ Li, Y Liu, Q Kang - International Communications in Heat and Mass …, 2022 - Elsevier
Many machine learning algorithms have been applied to determine soil properties in recent
years. However, the prediction performances of thermal conductivity of soils via machine …

Modeling thermal conductivity of clays: A review and evaluation of 28 predictive models

L Liu, H He, M Dyck, J Lv - Engineering Geology, 2021 - Elsevier
Effective thermal conductivity of clay (λ eff) has essential applications in disciplines such as
environmental and earth science, agriculture and engineering. Much work has been done …

A theoretical model for estimating the thermal conductivity of granular geomaterials with low porosity

J Bi, G Zhao, Z Wu, S Yang - … Communications in Heat and Mass Transfer, 2024 - Elsevier
The thermal conductivity has an important influence on the geotechnical and
geoenvironmental engineering. Most existing thermal conductivity models appear to …

Evaluating thermal conductivity of soil-rock mixtures in Qinghai-Tibet plateau based on theory models and machine learning methods

Q Wang, R Bai, Z Zhou, W Zhu - International Journal of Thermal Sciences, 2024 - Elsevier
The thermal property of the scum layer (soil-rock mixtures) has dominant influence on the
heat exchange efficiency between the lower rock layer and the upper environment in the …

Combination of the unifying model for the effective thermal conductivity of isotropic, porous and composite geomaterials

Z Chu - International Journal of Rock Mechanics and Mining …, 2023 - Elsevier
A fixed-parameter ETC predictive model was proposed using simple combinatory rules,
based on which the tri-weighted means (arithmetic, geometric and harmonic) of tri-upper …

An improved model for predicting the thermal conductivity of sand based on a grain size distribution parameter

S Zeng, Z Yan, J Yang - International Journal of Heat and Mass Transfer, 2023 - Elsevier
Soil thermal conductivity is a critical parameter in various fields related to soil heat transfer,
mainly affected by porosity and saturation. In this research, the thermal conductivity of three …

An evaluation of soil thermal conductivity models based on the porosity and degree of saturation and a proposal of a new improved model

W Zhang, R Bai, X Xu, W Liu - … Communications in Heat and Mass Transfer, 2021 - Elsevier
Soil thermal conductivity is a key factor for the soil heat transfer analysis, and is widely
applied in many fields. However, it is difficult to measure the thermal conductivities of various …

Evaluation of 14 frozen soil thermal conductivity models with observations and SHAW model simulations

H He, GN Flerchinger, Y Kojima, D He, SP Hardegree… - Geoderma, 2021 - Elsevier
Frozen soil thermal conductivity (FSTC, λ eff) is a critical thermophysical property that is
required for a variety of science and engineering applications. Measurements of λ eff in …