Modelling of the forming processes of sandstones with irregular particles
Preliminary results of a study of the formation process of a sandstone using numerical modelling are presented. In our model we simulate via the Discrete Element Method the settling of sediments and the effects of compaction due to burial. The model constructed mimics a clean sand composed of rounded grains of with a narrow size distribution such as is found in some reference sands such as Ottawa sand. We compared the porosity, heterogeneity, geometric tortuosity and specific surface of the Ottawa-like sample with a pack of spheres also created by simulations. The results obtained so far demonstrate that small perturbations from the perfectly spherical shape of particles can produce appreciable changes in the bulk porosity of the resulting packs and relatively small variations of the specific surface area and homogeneity.
Xavier Garcia John Paul Latham Jiansheng Xiang Antonio Munjiza
Earth Science and Engineering,Imperial College,South Kensington,London SW72AZ,United Kingdom Department of Engineering,Queen Mary University,Mile End,London E14NS,United Kingdom.
国际会议
北京
英文
232-241
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）