四川大学学报：工程科学版2011，Vol.43Issue(6)：98-104,7.
考虑冻土相变的非稳定温度场-渗流场耦合有限元分析研究
FEM Analysis Research on Unsteady Temperature-seepage Coupling System of Frozen Soil Phase Changing
摘要
Abstract
Considering the change of frozen soil phase,the finite element method of unsteady temperature field-seepage field coupled problem was improved.According to the soil freezing characteristic curve,the pore ice containing volume was calculated and fixed.At the same time,a correction method of temperature derivate unfrozen soil＇s water volume,and a new method accelerating the convergence speed were put forward,to eliminate the numerical oscillation phenomena that appears in the frozen soil＇s temperature field-seepage field coupling calculation,and accelerate the convergence speed.Finally,two numerical examples were compared with the experiments to verify the reliability and effectiveness of the method.关键词
冻土/相变/孔隙含冰量/加速收敛Key words
frozen soil/phase change/pore ice containing volume/accelerating convergence分类
建筑与水利引用本文复制引用
郭利娜,李同春,刘晓青,牛志伟..考虑冻土相变的非稳定温度场-渗流场耦合有限元分析研究[J].四川大学学报：工程科学版,2011,43(6):98-104,7.基金项目
国家“十一五”科技支撑计划资助项目 （）
