干旱区生态环境知识资源中心(Arid): Characteristics and Prediction of the Thermal Diffusivity of Sandy Soil

Arid

DOI	10.3390/en15041524
	Characteristics and Prediction of the Thermal Diffusivity of Sandy Soil
	Dai, Baoming; Zhang, Yaxing; Ding, Haifeng; Xu, Yunlong; Liu, Zhiyun
通讯作者	Liu, ZY
来源期刊	ENERGIES
EISSN	1996-1073
出版年	2022
卷号	15 期号:4
英文摘要	Revealing the variation law of thermal diffusivity of sandy soil can provide a theoretical basis for the engineering design and construction in cold and arid regions. Based on experimental data of sandy soil samples, the distribution characteristics and influence of dry density and moisture content on thermal diffusivity are analyzed in this work. Then, the prediction model based on the empirical fitting formula and RBF neural network method for thermal diffusivity of frozen and unfrozen sandy soil is established, and the prediction accuracy of different prediction methods is compared. The results show that (1) thermal diffusivity of sandy soil is positively correlated with the particle size. With the increase of sand size, thermal diffusivity of sandy soil increases significantly. (2) Partial correlation among natural moisture content, dry density, and thermal diffusivity varies with different frozen and unfrozen conditions. (3) For unfrozen sandy soil, the binary RBF neural network prediction model is obviously better than that of the binary empirical fitting formula model. (4) The ternary prediction model has significantly higher prediction accuracy than that of the binary prediction model for frozen sandy soil, and the ternary RBF neural network model has the best prediction effect among the four methods.
英文关键词	sandy soil thermal diffusivity RBF neural network distribution characteristic prediction model
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000824085600001
WOS类目	Energy & Fuels
WOS研究方向	Energy & Fuels
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392406
推荐引用方式 GB/T 7714	Dai, Baoming,Zhang, Yaxing,Ding, Haifeng,et al. Characteristics and Prediction of the Thermal Diffusivity of Sandy Soil[J],2022,15(4).
APA	Dai, Baoming,Zhang, Yaxing,Ding, Haifeng,Xu, Yunlong,&Liu, Zhiyun.(2022).Characteristics and Prediction of the Thermal Diffusivity of Sandy Soil.ENERGIES,15(4).
MLA	Dai, Baoming,et al."Characteristics and Prediction of the Thermal Diffusivity of Sandy Soil".ENERGIES 15.4(2022).