颗粒材料的离散颗粒及间隙水渗流模型与数值模拟  

A MODEL OF DISCRETE PARTICLES AND SEEPAGE OF INTERSTITIAL WATER IN GRANULAR MATERIALS AND NUMERICAL SIMULATION

作　　者：楚锡华[1] 李锡夔[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116024

出　　处：《岩石力学与工程学报》2006年第12期2407-2415,共9页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50278012;10272027;19832010);国家重点基础研究发展规划(973)项目(2002CB412709)

摘　　要：基于离散颗粒模型的含间隙水颗粒材料液–固耦合分析,发展了Darcy渗流模型。应用特征线SPH方法求解液相,建立饱和与非饱和颗粒材料渗流模型的数值模型。数值例题给出饱和颗粒材料结构物在位移加载条件下的破坏模式及间隙水Darcy速度与水压力分布,并进一步模拟降雨条件下非饱和颗粒材料结构物的瞬态渗流过程,显示该模型模拟含间隙水颗粒材料结构物液–固耦合及变形的良好性能。Based on the discrete particle model, which is used to solve the solid phase and to obtain the individual grain＇s information such as location, velocities and displacements, etc., Darcy seepage model for the analysis of fluid-solid interaction in granular materials with interstitial water is proposed. Combined with the characteristic based smoothed particle hydrodynamics（SPH） method that is used to get Darcy＇s velocities, the numerical solution scheme for the seepage model of saturated and unsaturated granular materials is presented. Numerical results demonstrate the capability and good performance of the proposed model in modelling the fluid-solid interaction and deformation in granular materials with interstitial water.

关 键 词：渗流力学 离散颗粒模型 光滑质点流体动力学 特征线 颗粒材料 液-固耦合 

分 类 号：O357.3[理学—流体力学] O242[理学—力学]