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DOI	10.3724/SP.J.1226.2020.00125
	A modified numerical model for moisture-salt transport in unsaturated sandy soil under evaporation
	Wen, Wei; Lai, YuanMing; You, ZheMin
发表日期	2020
ISSN	1674-3822
起始页码	125
结束页码	133
卷号	12 期号:3
英文摘要	Soil salinization, caused by salt migration and accumulation underneath the soil surface, will corrode structures. To analyze the moisture-salt migration and salt precipitation in soil under evaporation conditions, a mathematical model consisting of a series of theoretical equations is briefly presented. The filling effect of precipitated salts on tortuosity factor and evaporation rate are taken into account in relevant equations. Besides, a transition equation to link the solute transport equation before and after salt precipitation is proposed. Meanwhile, a new relative humidity equation deduced from Pitzer ions model is used to modify the vapor transport flux equation. The results show that the calculated values are in good agreement with the published experimental data, especially for the simulation of volume water content and evaporation rate of Toyoura sand, which confirm the reliability and applicability of the proposed model.
英文关键词	moisture-salt transport; precipitated salt; Pitzer ions model; relative humidity; evaporation rate
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS关键词	WATER ; DISPERSIVITY ; SATURATION
WOS记录号	WOS:000573656800001
来源期刊	SCIENCES IN COLD AND ARID REGIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239570
作者单位	[Wen, Wei; Lai, YuanMing; You, ZheMin] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China; [Wen, Wei; Lai, YuanMing] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wen, Wei,Lai, YuanMing,You, ZheMin. A modified numerical model for moisture-salt transport in unsaturated sandy soil under evaporation[J],2020,12(3).
APA	Wen, Wei,Lai, YuanMing,&You, ZheMin.(2020).A modified numerical model for moisture-salt transport in unsaturated sandy soil under evaporation.SCIENCES IN COLD AND ARID REGIONS,12(3).
MLA	Wen, Wei,et al."A modified numerical model for moisture-salt transport in unsaturated sandy soil under evaporation".SCIENCES IN COLD AND ARID REGIONS 12.3(2020).