| 基于时驱硬球算法与格子玻尔兹曼方法的颗粒流体系统直接数值模拟 |
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| 引用本文： | 周国峰,王利民,王小伟,熊勤钢,葛蔚. 基于时驱硬球算法与格子玻尔兹曼方法的颗粒流体系统直接数值模拟[J]. 科学通报, 2011, 56(16): 1246-1256. DOI: 10.1360/972010-1687 |
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| 作者姓名： | 周国峰 王利民 王小伟 熊勤钢 葛蔚 |
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| 作者单位： | 中国科学院过程工程研究所多相复杂系统国家重点实验室;中国科学院研究生院; |
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| 基金项目： | 国家重大科研装备研制项目(ZDYZ2008-2); 国家科技重大专项(2008ZX05014-003-006HZ); 中国科学院知识创新工程项目(KGCX2-YW-124); 科技部中澳国际合作项目(2007DFA41320)资助 |
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| 摘 要： | 实现了一种直接数值模拟颗粒流体系统的耦合算法, 颗粒间相互作用由时驱硬球算法描述, 而流体的控制方程采用格子玻尔兹曼方法求解, 流固耦合用浸入运动边界法实现.该方法使用欧拉网格求解流场, 拉格朗日网格跟踪颗粒, 避免了非结构化贴体网格方法需要重新划分网格的问题. 通过模拟两个圆形颗粒在黏性流体中的沉降过程, 成功地复现了经典的Drafting-Kissing-Tumbling(DKT)过程, 验证了耦合算法的有效性.
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| 关 键 词： | 时驱硬球算法 格子玻尔兹曼方法 浸入运动边界法 颗粒流体系统 直接数值模拟 |
| 收稿时间： | 2010-12-08 |
Direct numerical simulation scheme for particle-fluid systems based on a time-driven hard-sphere and the lattice Boltzmann method |
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| ZHOU GuoFeng,,WANG LiMin,WANG XiaoWei ,XIONG QinGang , , GE Wei State Key Laboratory of Multiphase Complex Systems. Direct numerical simulation scheme for particle-fluid systems based on a time-driven hard-sphere and the lattice Boltzmann method[J]. Chinese Science Bulletin, 2011, 56(16): 1246-1256. DOI: 10.1360/972010-1687 |
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| Authors: | ZHOU GuoFeng WANG LiMin WANG XiaoWei XIONG QinGang & GE Wei State Key Laboratory of Multiphase Complex Systems |
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| Affiliation: | ZHOU GuoFeng1,2,WANG LiMin1,WANG XiaoWei 1,XIONG QinGang 1,2 & GE Wei 1 1State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China,2Graduate University of the Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | A direct numerical simulation scheme for particle-fluid systems has been proposed and implemented.The discrete particle phase is described using a time-driven hard-sphere,and the governing equations of the continuous fluid phase are resolved using the lattice Boltzmann method.Particle-fluid coupling is realized using the immersed moving boundary method.This method modifies the collision operator with the force-term dependence of the solid volume fraction of the partially filled fluid cells,which ensures a n... |
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| Keywords: | direct numerical simulation time-driven hard-sphere lattice Boltzmann method immersed moving boundary method particle-fluid systems |
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