气候变化领域集成服务门户(CCPortal): An evaluation of soil thermal conductivity models based on the porosity and degree of saturation and a proposal of a new improved model

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DOI	10.1016/j.icheatmasstransfer.2021.105738
	An evaluation of soil thermal conductivity models based on the porosity and degree of saturation and a proposal of a new improved model
	Zhang, Weidong; Bai, Ruiqiang; Xu, Xiangtian; Liu, Wei
通讯作者	Xu, XT (通讯作者)，Inner Mongolia Univ, Inst Transportat, Hohhot 010070, Peoples R China.
发表日期	2021
ISSN	0735-1933
EISSN	1879-0178
卷号	129
英文摘要	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 soils with different porosities and degrees of saturation. Therefore, an accurate soil thermal conductivity model is essential for practical engineering. In this research, the comparisons and evaluations of eight soil thermal conductivity models (including seven from other scholars and a new improved model) are conducted based on the measured data from published literature. Additionally, these models are categorized into two groups: theoretical models and empirical models. The results show that the predictive capabilities of the empirical models are higher than those of the theoretical models because the first use fitted values of the empirical parameters better fit the experimental data. However, the theoretical models have definite physical meanings. The new proposed model shows better performance, and its Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) values when the thermal conductivities of seven soils are calculated are less than 0.1 Wm(-1)K(-1). This work provides references for the selection and application of soil thermal conductivity models
关键词	WATER-CONTENT TEMPERATURE MEDIA
英文关键词	Soil; Thermal conductivity model; Porosity; Degree of saturation
语种	英语
WOS研究方向	Thermodynamics ; Mechanics
WOS类目	Thermodynamics ; Mechanics
WOS记录号	WOS:000719953800002
来源期刊	INTERNATIONAL COMMUNICATIONS IN 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/254918
作者单位	[Zhang, Weidong; Xu, Xiangtian; Liu, Wei] Inner Mongolia Univ, Inst Transportat, Hohhot 010070, Peoples R China; [Zhang, Weidong] Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China; [Bai, Ruiqiang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Xu, Xiangtian] Inner Mongolia Univ, Collaborat Innovat Ctr Grassland Ecol Secur, Hohhot 010021, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Weidong,Bai, Ruiqiang,Xu, Xiangtian,et al. An evaluation of soil thermal conductivity models based on the porosity and degree of saturation and a proposal of a new improved model[J]. 中国科学院西北生态环境资源研究院,2021,129.
APA	Zhang, Weidong,Bai, Ruiqiang,Xu, Xiangtian,&Liu, Wei.(2021).An evaluation of soil thermal conductivity models based on the porosity and degree of saturation and a proposal of a new improved model.INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,129.
MLA	Zhang, Weidong,et al."An evaluation of soil thermal conductivity models based on the porosity and degree of saturation and a proposal of a new improved model".INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER 129(2021).