液体飽和多孔質体の析出凍結に関する熱力学的検討

概要

論文の詳細を見る
This paper proposes a dynamic equation of state for the partially frozen zone between the freezing front and the ice-lens forming front, i.e. the so-called frozen fringe, in a one-dimensionally freezing porous medium saturated with liquid. The dynamic equation of state is derived from an enthalpy balance of the liquid flow in the frozen fringe, and it can be used to quantify the segregation ratio, which represents the segregating volume in the unit volume of a porous medium for a unit time. In addition, the study has clarified that the frozen fringe consists of two zones, namely a sub-cooled zone including the ice-lens forming front where segregation occurs, and an equilibrium zone including the freezing front where in-situ freeze occurs. In the sub-cooled zone, the segregation produces an expansion strain, which was observed by a frost heave experiment. Thus the proposed theory is qualitatively verified by the experimental results.
一般社団法人日本機械学会の論文
1999-09-25