IMECH-IR  > 流固耦合系统力学重点实验室(2012-)
A novel liquid bridge model for estimating SWCC and permeability of granular material
Wang XL(王晓亮); Li JC(李家春); Li, JC (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
2015-05
发表期刊POWDER TECHNOLOGY
卷号275页码:121-130
ISSN0032-5910
摘要As traditional liquid bridge model based on Yang-Laplace theory fails to model behaviors of unsaturated granular materials when liquid bridges fuse with each other in funicular and capillary regimes, a method called "Redistribution of Air Volume and Reduction of Liquid Bridge Force" is proposed, and incorporated into the original discrete element method to resolve this issue. Both soil water characteristic curve and suction stress characteristic curve are worked out by the modified discrete element method, the results of which coincide with theoretical solutions for simple cubic packing and tetrahedral packing of granular materials. Furthermore, parameter study shows that soil water characteristic curve depends on effective particle diameter, particle size distribution and packing density. Typical soil water characteristic curves of sand and silt are obtained using the modified method, with a trend similar to that of experiment qualitatively. With the help of Mualem model and Kozeny-Carman equation, permeability is also predicated for granular materials. In particular, the air entry value coincides with or close to those of typical sand and silt in magnitude. Finally, a case study of SWCC prediction for sandy soil is implemented with acceptable results. We may conclude that the modified discrete element method is capable of predicting hydraulic properties of granular materials qualitatively and semi-quantitatively. (C) 2015 Published by Elsevier B.V.
关键词Unsaturated Granular Materials Discrete Element Method Soil Water Characteristic Curves Liquid Bridge
学科领域Engineering, Chemical
DOI10.1016/j.powtec.2015.01.044
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000351801300014
关键词[WOS]PARTICLE-SIZE DISTRIBUTION ; DISCRETE ELEMENT METHOD ; UNSATURATED SOILS ; HYDRAULIC CONDUCTIVITY ; ROLLING RESISTANCE ; CHARACTERISTIC CURVE ; SUCTION STRESS ; SHEAR-STRENGTH ; DEM ANALYSES ; CAPILLARY
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Natural Science Funds of China [11432015, 10932012]
课题组名称LMFS水环境流体力学(LEM)
论文分区二类/Q2
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/49918
专题流固耦合系统力学重点实验室(2012-)
通讯作者Li, JC (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Wang XL,Li JC,Li, JC . A novel liquid bridge model for estimating SWCC and permeability of granular material[J]. POWDER TECHNOLOGY,2015,275:121-130.
APA 王晓亮,李家春,&Li, JC .(2015).A novel liquid bridge model for estimating SWCC and permeability of granular material.POWDER TECHNOLOGY,275,121-130.
MLA 王晓亮,et al."A novel liquid bridge model for estimating SWCC and permeability of granular material".POWDER TECHNOLOGY 275(2015):121-130.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
IMCAS-J2015-045.pdf(1736KB) 开放获取CC BY-NC浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[王晓亮]的文章
[李家春]的文章
[Li, JC (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.]的文章
百度学术
百度学术中相似的文章
[王晓亮]的文章
[李家春]的文章
[Li, JC (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.]的文章
必应学术
必应学术中相似的文章
[王晓亮]的文章
[李家春]的文章
[Li, JC (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: IMCAS-J2015-045.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。