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DOI	10.1007/s00231-021-03110-0
	Modeling thermal conductivity of soils during a freezing process
	Lu, Jianguo; Wan, Xusheng; Yan, Zhongrui; Qiu, Enxi; Pirhadi, Nima; Liu, Junni
通讯作者	Wan, XS (通讯作者)，Southwest Petr Univ, Sch Civil Engn & Geomat, Chengdu 610513, Sichuan, Peoples R China.
发表日期	2022
ISSN	0947-7411
EISSN	1432-1181
起始页码	283
结束页码	293
卷号	58 期号:2
英文摘要	Thermal conductivity of soils is a key parameter in determining the heat transfer and temperature field in thermal engineering. This paper developed a thermal conductivity model of soils with a consideration of the thermo-hydro-deformation interaction during a freezing process. The model was proposed based on the concept of normalized thermal conductivity, and integrated the temperature, volumetric unfrozen water content, porosity, mineralogy, solid particle type and frost heave. Then, the steps to calculate thermal conductivity of soils during a freezing process were illustrated. Additionally, compared with the other two widely used empirical models, i.e., model based on the apparent heat capacity method and model based on the Heaviside function, the proposed model was more effective and reasonable, while the other two models had some limitations in calculating thermal conductivity of soils during a freezing process. Moreover, the proposed model was comprehensively verified by the 32 soil samples, and the good agreements between the measured and model-calculated thermal conductivities of soils confirmed that the proposed model can be used to calculate the thermal conductivity of soils in the numerical simulations, and could also well reflect the effect of phase transition of water-ice on thermal conductivity of soils during a freezing process.
关键词	PERMAFROST REGIONS DEFORMATION TEMPERATURE PARAMETERS TUNNEL
语种	英语
WOS研究方向	Thermodynamics ; Mechanics
WOS类目	Thermodynamics ; Mechanics
WOS记录号	WOS:000670847200003
来源期刊	HEAT AND MASS TRANSFER
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254419
作者单位	[Lu, Jianguo; Wan, Xusheng; Yan, Zhongrui; Qiu, Enxi; Pirhadi, Nima; Liu, Junni] Southwest Petr Univ, Sch Civil Engn & Geomat, Chengdu 610513, Sichuan, Peoples R China; [Lu, Jianguo] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Lu, Jianguo,Wan, Xusheng,Yan, Zhongrui,et al. Modeling thermal conductivity of soils during a freezing process[J]. 中国科学院西北生态环境资源研究院,2022,58(2).
APA	Lu, Jianguo,Wan, Xusheng,Yan, Zhongrui,Qiu, Enxi,Pirhadi, Nima,&Liu, Junni.(2022).Modeling thermal conductivity of soils during a freezing process.HEAT AND MASS TRANSFER,58(2).
MLA	Lu, Jianguo,et al."Modeling thermal conductivity of soils during a freezing process".HEAT AND MASS TRANSFER 58.2(2022).