文献类型：会议论文

英文题名：Thermo-Hydro-Mechanical Coupling Analysis of Incompressible Saturated Poroelastic Column on Local Thermal Non-equilibrium

作者：Yang, Yang[1];He, Luwu[1]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

会议论文集：3rd International Conference on Mechanical Engineering and Mechanics

会议日期：OCT 21-23, 2009

会议地点：Beijing, PEOPLES R CHINA

语种：英文

外文关键词：saturated porous media; poroelastic column; thermo-hydro-mechanical coupling; local thermal non-equilibrium; quasi-static response

摘要：Based on the theory of porous media, the governing equations of thermo-hydro-mechanical fully coupling model for incompressible saturated poroelastic column on local thermal non-equilibrium are presented, firstly. The general analytic solutions for solid displacement, fluid velocity, pore pressure as well as solid and fluid phase temperatures of poroelastic column with a kind of boundary on local thermal non-equilibrium are achieved by mathematical method. Then, to compare the difference of results between under local thermal non-equilibrium and equilibrium conditions, the quasi-static response of finite poroelastic column subjected to periodical thermal loading is numerically investigated. The coupling effect of fluid velocity and solid displacement to temperature field is also discussed. The numerical results show that the difference of solid temperature between on local thermal non-equilibrium and local thermal equilibrium is not negligible when the ratio of solid and fluid thermal diffusion coefficients is bigger, which naturally impact on the solid displacement and the solid effective stress. The numerical results also reveal that the influence of thermal coupling coefficients in the fliud momentum balance equation on the solid displacement and the solid effective stress is more obvious, but that on the temperature field is much feeble enough to be neglected for both local thermal equilibrium and non-equilibrium conditions.