Nonlinear problem of unsaturated frozen soil thawing in the presence of capillary forces

被引：2
|
作者：
Vasil'ev, V. I.
Popov, V. V.
Tsypkin, G. G.
机构：
来源：
FLUID DYNAMICS | 2012年 / 47卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
unsaturated soil; ice melting; capillary pressure; flow through a porous medium; numerical simulation; VAPOR;
D O I：
10.1134/S0015462812010115
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The problem of ice melting in unsaturated frozen soil in the presence of the capillary pressure in the water-air zone is formulated. The complete system of boundary conditions on the phase transition front is derived. For solving the nonlinear problem a numerical method is proposed. The dependence of the water saturation distribution on the form of the Leverett function, the capillary pressure, and the external pressure and temperature gradients is investigated. In the limiting case of saturated frozen soil the numerical and analytical solutions are compared.
引用
收藏
页码：106 / 113
页数：8
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