关键词: 颗粒材料/
随机堆积/
渗流/
传输性能
English Abstract
A review of correlative modeling for transport properties, microstructures, and compositions of granular materials in soft matter
Xu Wen-Xiang1,Sun Hong-Guang1,
Chen Wen1,
Chen Hui-Su2
1.Institute of Soft Matter Mechanics, College of Mechanics and Materials, Hohai University, Nanjing 211100, China;
2.Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Fund Project:Project supported by the National Natural Science Foundation of China (Grant Nos. 11402076, 11572112, 11572111), the Natural Science Foundation for Jiangsu Province，China (Grant No. BK20130841), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2016B06314).Received Date:31 May 2016
Accepted Date:04 July 2016
Published Online:05 September 2016
Abstract:The transport property of granular material that is a typical of soft matter, plays a significant role in durability and service life in a relevant practical engineering structure. Physical properties of material is generally dependent on its microstructure. Meanwhile, the formation of microstructure is directly related to compositions of granular material. Understanding the intrinsic mechanisms of composition, microstructure, and transport property are of great importance for improving mechanical properties and durability of granular material. In this article, we review the new progress of modeling transport properties of granular multiphase materials. We focus on the three main aspects involving the simulations for geometrical models of composition structures, the quantitative characterizations for microstructures of pore and interface phases, and the theoretical and numerical strategies for transport properties of granular multiphase materials. In the first aspect, in-depth reviews of realizing complex morphologies of geometrical particles, detecting the overlap between adjacent non-spherical particles, and packing randomly non-spherical particles are presented. In the second aspect, we emphasize the development progress of the interfacial thickness and porosity distribution, the interfacial volume fraction, and the continuum percolation of soft particles such as compliant interfaces and discrete pores. In the final aspect, the modeling the transport properties and the frontier issues of the effective diffusion and anomalous diffusion in granular multiphase materials are elucidated. Finally, some conclusions and perspectives for future studies are provided.
Keywords: granular materials/
random packing/
percolation/
transport properties
