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[1]WU Li-zhou,HUANG Run-qiu.Numerical Solution of One-dimensional Coupled Heat and Moisture in Unsaturated Soils[J].Research of Soil and Water Conservation,2011,18(04):211-213.

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Numerical Solution of One-dimensional Coupled Heat and Moisture in Unsaturated Soils

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 04 Page number: 211-213 Column: Public date: 2011-08-20

Title:: Numerical Solution of One-dimensional Coupled Heat and Moisture in Unsaturated Soils

Author(s):: WU Li-zhou, HUANG Run-qiu; National Laboratory of Geological Hazard Prevention and Geological Environment Protection, Chengdu University of Technology, Chengdu 610069, China

Keywords:: unsaturated soil; coupled heat and moisture; water content; temperature; numerical solution

CLC:: S152.9

DOI:: -

Abstract:: Coupled heat and moisture in unsaturated soils can be found in many engineering, such as roadbed and dam. The system of partial differential equations governing the coupled processes of heat conduction and moisture transport in a porous medium is given. FlexPDE known as a software is used to analyze heat conduction and moisture distribution over time in uncoupled and coupled conditions. The effect of water content on the heat profile, and influence of gravity on coupled heat and moisture in unsaturated soils are discussed. The numerical results indicate that coupling effect is very remarkable and should be considered. The numerical solutions show that influence of the gravity on moisture distribution is negligible, and that vapor diffusivity has no effect on coupled heat and moisture in unsaturated soils.

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