Modeling on coupled heat and moisture transfer in freezing soil using mixture theory

被引：2
|
作者：
Tiande Miao
Yonghong Niu
Li Guo
Changqing Zhang
机构：
[1] Lanzhou University,Department of Mechanics
[2] Southeast University,State Key Laboratory of Frozen Soil Engineering
[3] LIGG,undefined
[4] CAS,undefined
来源：
Science in China Series D: Earth Sciences | 1999年 / 42卷
关键词：
freezing soil; heat and moisture transfer; Burgers type equation; continuum mechanics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A set of perfect constitutive equations including the coupling effects of heat transfer and moisture migration is constructed for freezing soil, after analyzing its thermomechanic properties, in the framework of continuum mechanics and mixture theory. By applying the theory, the influence of void ratio on frost heaving is studied after proposing a criterion for formation of layered ice; the results obtained coincide with experimental data available in the literature. The temperature distribution of freezing soil is analyzed, the controlling equation deduced appears to be a nonlinear Burgers type equation with varying boundaries, which presents a theoretic foundation for studying the nonlinear effects of heat-moisture migration in the freezing process.
引用
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页码：9 / 16
页数：7
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