A moving-pump model for water migration in unsaturated freezing soil
文献类型：期刊论文
| 作者 | Zhou, Jiazuo1; Wei, Changfu1; Li, Dongqing2; Wei, Houzhen1 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 104页码:14-22 |
| 关键词 | Unsaturated freezing soil Water migration Heat transfer Moving-pump model Numerical procedure |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2014.04.006 |
| 英文摘要 | This paper presents a new approach for simulating the water migration in freezing soils, in which the pore water migration and heat transfer are characterized using an imaginary pump attached with a small imaginary reservoir. The pump moves with the freezing front as temperature decreases, sucks the liquid water from the unfrozen zone and then stores it in the frozen zone. The reservoir is used to gather the sucked water and store it in the form of pore ice through phase change. Explicit governing equations are developed for describing the water migration, crystallization and/or heat transfer in the soil, the pump and the reservoir. The proposed model is numerically implemented into a commercial code. Compared to the previous approaches used to simulate the soil freezing processes, application of the new approach avoids remeshing and recalculating the moving boundaries, and this feature can drastically simplify the numerical implementation of the theoretical model. The new approach is used to analyze the one-dimensional freezing process in soils. The simulated results are compared with the experimental data available in the literature and the simulations based on other approaches, showing that the new approach is capable of effectively simulating the freezing process of soils. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000340300700003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3614]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; 2.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst |
| 推荐引用方式 GB/T 7714 | Zhou, Jiazuo,Wei, Changfu,Li, Dongqing,et al. A moving-pump model for water migration in unsaturated freezing soil[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2014,104:14-22. |
| APA | Zhou, Jiazuo,Wei, Changfu,Li, Dongqing,&Wei, Houzhen.(2014).A moving-pump model for water migration in unsaturated freezing soil.COLD REGIONS SCIENCE AND TECHNOLOGY,104,14-22. |
| MLA | Zhou, Jiazuo,et al."A moving-pump model for water migration in unsaturated freezing soil".COLD REGIONS SCIENCE AND TECHNOLOGY 104(2014):14-22. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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