气候变化领域集成服务门户(CCPortal): Numerical modeling of water-heat-vapor-salt transport in unsaturated soil under evaporation

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DOI	10.1016/j.ijheatmasstransfer.2020.120114
	Numerical modeling of water-heat-vapor-salt transport in unsaturated soil under evaporation
	Wen, Wei; Lai, Yuanming; You, Zhemin
发表日期	2020
ISSN	0017-9310
EISSN	1879-2189
卷号	159
英文摘要	Evaporation-induced soil salinization will threaten the durability of engineering buildings, and it is crucial to study the coupling effect of water-heat-vapor-salt (WHVS) for anticorrosion of porous materials. To analyze the coupled system, a modified and developed WHVS transport model is proposed under the conditions that the film water transport theory, surface tension affected by salt, the filling effect of precipitated salt on soil pores, the residual volumetric air content, the effect of salt on heat transport and storage and the effect of vapor flux and thermal radiation on thermal boundary are all taken into account. The predictions are validated and analyzed by the results obtained from evaporation experiments under different boundary conditions. The data of silica sand are from the literatures ([16, 17.57]), and the data of silty clay are from our laboratory test. The results indicate that the calculated water content, solute concentration, temperature and evaporation rate are in good agreement with the experimental data, especially for silty clay. For silica sand, there are some deviations in concentration and temperature, and the overall agreement is satisfied. The consistency between the simulated and measured data shows the effectiveness of proposed model and that the model can be applied successfully in soil science and groundwater hydrology and can be extended to related disciplines. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Water-heat-vapor-salt transport model; Salt precipitation; Evaporation rate; Salt crust; Unsaturated soil
语种	英语
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS关键词	HYDRAULIC CONDUCTIVITY ; SIZE DISTRIBUTION ; BARE SOIL ; SURFACE ; PRECIPITATION ; DIFFUSION ; FLOW
WOS记录号	WOS:000560367300054
来源期刊	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239564
作者单位	[Wen, Wei; Lai, Yuanming; You, Zhemin] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, 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. Numerical modeling of water-heat-vapor-salt transport in unsaturated soil under evaporation[J],2020,159.
APA	Wen, Wei,Lai, Yuanming,&You, Zhemin.(2020).Numerical modeling of water-heat-vapor-salt transport in unsaturated soil under evaporation.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,159.
MLA	Wen, Wei,et al."Numerical modeling of water-heat-vapor-salt transport in unsaturated soil under evaporation".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 159(2020).