地盤の凍結と融解過程の解析に関する研究

概要

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In this paper, the method of numerical analysis for heat and moisture transfer in porous materials below 0℃ is proposed which is valid in nonfreezing regime as well as freezing regime. The problem of coupled moisture and thermal states for freezing and thawing soils is complex because liquid water and ice coexist in soils below 0℃. Governing equations are obtained by conservation of mass and energy for each phase of moisture, and the equation on the relation between the unfreezing water, the water chemical potential and the temperature below 0℃. The aim of this paper is to present an exact and efficient numerical method for solving and simulating the transient heat and moisture transfer problems with freezing and thawing process by using those governing equations shown above. The proposed method is a finite difference method for one dimensional semi-infinite domain. Numerical examples and results in freezing process are shown and discussed.
社団法人日本建築学会の論文
1996-04-30