The analysis of heat and water fluxes in frozen silty soil

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英文篇名：The analysis of heat and water fluxes in frozen silty soil 作者：DaHu ; Rui ; Ming ; Lu ; Kunio ; Watanabe ; Jun ; Zhang 英文作者：DaHu Rui;Ming Lu;Kunio Watanabe;Jun Zhang;School of Civil Engineering, Henan Polytechnic University;State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences;Graduate School of Bioresources, Mie University;University of Chinese Academy of Sciences; 英文关键词：unsaturated freezing soil;;hydrothermal coupling;;heat and water fluxes;;COMSOL 中文刊名：HAQK 英文刊名：寒旱区科学(英文) 机构：School of Civil Engineering, Henan Polytechnic University;State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences;Graduate School of Bioresources, Mie University;University of Chinese Academy of Sciences; 出版日期：2019-02-15 出版单位：Sciences in Cold and Arid Regions 年：2019 期：v.11 基金：financial support from the National Natural Science Foundation of China (Grant No. 41371092);; partially supported by the Scientific Research Starting Foundation for Re turned Overseas Chinese Scholars, Ministry of Educa tion (Grant No. 20100528), China;; the State Key Labo ratory of Frozen Soil Engineering (SKLFSE201402);; the National Key Scientific and Technological Project of Henan Province Office of Education, China (Grant No. 14B170007);; and the Doctoral Scientific Fund Project of Henan Polytechnic University (Grant No. 648347) 语种：英文; 页：HAQK201901004 页数：8 CN：01 ISSN：62-1201/P 分类号：25-32

摘要

In this paper, based on the basic equations of water flow and heat transfer, the hydrothermal coupling model is established.The numerical model was realized in COMSOL Multiphysics software, and simulation results are compared with the experimental results of Watanabe and Wake(2008) to verify the effectiveness of the model. Through the calculation, we can obtain the dynamic changes of heat and water fluxes, thermal and hydrological properties, matric potential and temperature gradient in unsaturated freezing soil; and these variables are unmeasurable in practice.
        In this paper, based on the basic equations of water flow and heat transfer, the hydrothermal coupling model is established.The numerical model was realized in COMSOL Multiphysics software, and simulation results are compared with the experimental results of Watanabe and Wake(2008) to verify the effectiveness of the model. Through the calculation, we can obtain the dynamic changes of heat and water fluxes, thermal and hydrological properties, matric potential and temperature gradient in unsaturated freezing soil; and these variables are unmeasurable in practice.

引文

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