|
|
Micro-structure of clay generated by quartet structure generation set |
LI Ren-min, LIU Song-yu, FANG Lei, DU Yan-jun |
Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China |
|
|
Abstract It’s very difficult to construct the complex microstructure of clay. A multiparameter random generationgrowth method, quartet structure generation set (QSGS) was introduced to model the microstructure of clay. The basic principle of QSGS was introduced, and the generation step of QSGS was constructed. The corresponding procedures were compiled with Matlab and AutoCAD VBA. The impact of the structure of clay microstructure on groundwater seepage was discussed by a case study. The microstructure of clay generated by QSGS can be directly imported into finite element method, and many issues of the microscale can be analyzed by numerical analysis software. The size distribution, shapes, micropore structure, circuitous of the constructed clay particle were quite similar to the real microstructure of clay.
|
Published: 01 October 2010
|
|
采用随机生长四参数生成法构造黏土微观结构
针对黏土微观结构复杂、构造困难的问题,采用随机生长四参数生成法构造黏土微观结构.介绍随机生长四参数生成法,构造黏土微观结构的基本原理和详细的生成步骤,联合应用Matlab和AutoCAD VBA编制相应的程序,讨论构造的黏土微观结构对地下水渗流的影响.程序生成的微观结构可以直接导入有限元程序,便于采用数值分析软件研究微观结构相关问题.构造的黏土颗粒大小分布、形状各异,孔隙结构微小,迂回曲折,与真实的黏土微观结构相似.
|
|
[1] 王唯威.分形多孔介质内导热与流动数值模拟研究[D].北京:中国科学院工程热物理研究所,2006: 19-32.
WANG Weiwei. Numerical study of heat conduction in fractal porous media [D].Beijing: Institute of Engineering Thermophysics, CAS, 2006: 19-32.
[2] TACHER L, PERROCHET P, PARRIAUX A. Generation of granular media [J]. Transport in Porous Media, 1997, 26(1): 99-107.
[3] PILOTTI M. Generation of realistic porous media by grains sedimentation [J]. Transport in Porous Media, 1998, 33(3): 257-278.
[4] 刘勇军,朱岳明,丰土根,等.随机土体结构模型理论及应用[J].岩土工程学报,2001,23(3):354-357.
LIU Yongjun, ZHU Yueming, FENG Tugen, et al. Study on random soil frame model and its application [J]. Chinese Journal of Geotechnical Engineering, 2001, 23(3): 354-357.
[5] WANG M, PAN N. Numerical analyses of effective dielectric constant of multiphase microporous media [J].Journal of Applied Physics, 2007, 101(11): 114102-1-114102-8.
[6] NARSILIO G A, BUZZI O P, FITYUS S G, et al. Upscaling of NavierStokes equations in porous media: theoretical, numerical and experimental approach [J]. Computers and Geotechnics, 2009, 36: 1200-1206.
[7] 张国宝.AutoCAD2000VBA开发技术\
[M\].北京:清华大学出版社,2000: 20-37.
[8] 薛定谔A E.多孔介质中的渗流物理\
[M\].王鸿勋,张朝琛,孙书琛,译.北京:石油工业出版社,1982: 70-82.
[9] 李仁民,刘松玉.Femlab软件及其在岩土工程中的应用\
[J\].中外公路,2007,27(6): 7-10.
LI Renmin, LIU Songyu. Modeling and solving geotechnical physics problems with FEMLAB \
[J\]. Journal of China and Foreign Highway, 2007, 27(6): 7-10.
[10] PIVONKA P, NARSILIO G A, LI Renmin, et al. Electrodiffusive transport in charged porous media: from the particlelevel scale to the macroscopic scale using volume averaging [J]. Journal of Porous Media, 2009, 12(2): 101-118. |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|