| 引用本文: | 蔡国庆,刁显锋,杨芮,王北辰,高帅,刘韬.基于CFD-DEM的流-固耦合数值建模方法研究进展[J].哈尔滨工业大学学报,2024,56(1):17.DOI:10.11918/202309001 |
| CAI Guoqing,DIAO Xianfeng,YANG Rui,WANG Beichen,GAO Shuai,LIU Tao.Research progress of fluid-solid coupling model based on CFD-DEM coupling[J].Journal of Harbin Institute of Technology,2024,56(1):17.DOI:10.11918/202309001 |
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| 基于CFD-DEM的流-固耦合数值建模方法研究进展 |
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蔡国庆1,2,刁显锋2,杨芮2,王北辰2,高帅2,刘韬2
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(1.城市地下工程教育部重点实验室(北京交通大学),北京 100044;2.北京交通大学 土木建筑工程学院,北京 100044)
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| 摘要: |
| 随着土体渗流侵蚀研究的逐渐深入,对土颗粒流失和变形破坏机理的研究方法呈现出多尺度的特点。其中,计算流体力学-离散元耦合方法（CFD-DEM）为在细观尺度上研究流-固耦合相互作用对土体宏观力学特性的影响提供了一种行之有效的方法。针对CFD-DEM耦合方法在岩土工程领域应用现状,本文系统总结现有流-固耦合计算方法的优缺点,重点论述CFD-DEM耦合方法的建模策略,包括固相颗粒形状建模与粒间接触模型、流体相控制方程及参数计算方法,以及CFD-DEM耦合计算,并就相关问题进行深入探讨,最后提出了CFD-DEM耦合方法未来的发展方向。 |
| 关键词: CFD-DEM 流-固耦合 颗粒建模 流体建模 流-固相互作用力 |
| DOI：10.11918/202309001 |
| 分类号:TU443 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(U4,1);中央高校基本科研业务费项目(2023JBZD004) |
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| Research progress of fluid-solid coupling model based on CFD-DEM coupling |
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CAI Guoqing1,2,DIAO Xianfeng2,YANG Rui2,WANG Beichen2,GAO Shuai2,LIU Tao2
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(1.Key Lab of Urban Underground Engineering (Beijing Jiaotong University), Ministry of Education, Beijing 100044; 2.School of Civil Engineering, Beijing Jiaotong University, Beijing 100044)
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| Abstract: |
| With the gradual deepening of the study of seepage erosion in soil, the research methods of soil particle loss and deformation and failure mechanism show the characteristics of multi-scale. The computational fluid dynamics-discrete element coupling method (CFD-DEM) provides an effective method to study the macroscopic mechanical characteristics of soil on the microscale, considering the influence of fluid-solid interaction. Regarding the current application status of CFD-DEM coupling method in geotechnical engineering, this paper systematically summarizes the advantages and disadvantages of existing fluid-solid coupling calculation methods, focusing on the modeling strategies of CFD-DEM coupling method. These strategies include solid particle shape modeling and inter-particle contact models, control equations and parameter calculation methods for the fluid phase, as well as CFD-DEM coupling calculation. Furthermore, the paper conducts an in-depth exploration of related issues and concludes by proposing future development directions for the CFD-DEM coupling method. |
| Key words: CFD-DEM fluid-solid coupling particle modeling fluid modeling fluid-solid interaction |
