基于计算流体力学-离散元耦合的相对密实度对断级配土体渗蚀效应的影响研究OACSTPCD
Influence of soil relative density on suffusion of gap-graded soil based on coupled computational fluid dynamics-discrete element method
土体几何因素(粒径比、细粒含量、相对密实度等)不仅影响土体内部稳定性,同时对侵蚀进程有着重要影响.基于离散单元法(discrete element method,简称DEM)与计算流体动力学(computational fluid dynamics,简称CFD)耦合方法,建立了内部不稳定土渗流-侵蚀三维计算模型.考虑细粒含量及相对密实度对内部侵蚀过程的耦合影响,对细观变量:土体孔径分布曲线、颗粒接触数目以及内部传力机制进行分析,以揭示细粒含量与相…查看全部>>
The geometric characteristics of soil(gap ratio,fines content,relative density,etc.)not only affect the internal stability of soil but also have an important influence on suffusion development.Based on the coupled method of discrete element method(DEM)and computational fluid dynamics(CFD),a three-dimensional computation model of suffusion for internally unstable soil is established,the coupled effects of fines contents and relative densities on the suffusion…查看全部>>
张沛云;木林隆;黄茂松
同济大学岩土及地下工程教育部重点实验室,上海 200092||同济大学地下建筑与工程系,上海 200092同济大学岩土及地下工程教育部重点实验室,上海 200092||同济大学地下建筑与工程系,上海 200092同济大学岩土及地下工程教育部重点实验室,上海 200092||同济大学地下建筑与工程系,上海 200092
土木建筑
渗蚀CFD-DEM相对密实度细粒含量传力机制
suffusionCFD-DEMrelative densityfines contentstress transmission mechanism
《岩土力学》 2024 (1)
267-283,17
国家重点研发计划项目(No.2021YFB2600700)上海市自然科学基金(No.22ZR1464600).This work was supported by the National Key R&D Program of China(2021YFB2600700)and the Natural Science Foundation of Shanghai(22ZR1464600).
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