The analysis of heat and water fluxes in frozen silty soil |
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| Authors: | DaHu Rui Ming Lu Kunio Watanabe Jun Zhang |
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| Institution: | 1. School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China2. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China3. Graduate School of Bioresources, Mie University. Mie 514-8507, Japan4. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | 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. |
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| Keywords: | unsaturated freezing soil hydrothermal coupling heat and water fluxes COMSOL |
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