弹性多孔介质中一维孔隙压力的生成  

Set up of the one-dimensional pore pressure in Poroelastic media

作　　者：徐曾和[1] 章子霞[2] 

机构地区：[1]东北大学,沈阳138信箱沈阳110004 [2]上海交通大学数学系,上海200030

出　　处：《水动力学研究与进展（A辑）》2003年第3期336-342,共7页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金重点项目资助研究 ( 5 0 136 0 2 0 );教育部重点项目资助研究 ( 0 10 5 6 )

摘　　要：考虑到弹性多孔介质的渗透系数依赖于孔隙改变的特点 ,给出渗流耦合问题的基本方程 ;用初始层校正法求出了一维孔隙压力生成的摄动解 ;实例计算表明渗流的非线性对孔隙压力分布模式有明显影响。最后介绍了测量孔隙压力生成过程中流出试样的非稳定流量 ,确定弹性多孔介质渗透系数的方法 。Accounting for the character that the permeability of poroelastic media varies with its deformation, the governing equations on the interacting media of fluid and solid are established. The asymptotic solution for the generation of one dimensional pore pressure is obtained by applying initial layer correcting method. The case calculations indicate that the non linearity of the flow has an important role upon the distribution of pore pressure. Finally, a method determining the permeability of poroelastic medial according to the unstable discharge of fluid from the top end of specimen is introduced; the method takes much less measuring time than traditional laboratory method.

关 键 词：弹性多孔介质 一维孔隙压力 渗流耦合 初始层校正法 非稳定流量 

分 类 号：O357.3[理学—流体力学]