Direct numerical simulation of particulate flow via multigrid FEM techniques and the fictitious boundary method
Direct numerical simulation of particulate flow via multigrid FEM techniques and the fictitious boundary method
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DOI：
10.1002/fld.1129
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发表时间：
2006-06
影响因子：
1.8
通讯作者：
D. Wan;S. Turek
中科院分区：
文献类型：
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作者：
D. Wan;S. Turek
本文介绍了用虚拟边界法（FBM）对颗粒流进行直接数值模拟的技术。流动计算的多重网格有限元求解器和固体颗粒被允许自由移动通过计算网格，可以选择独立于任意形状，尺寸和数量的颗粒。流体和颗粒之间的相互作用被FBM考虑在内，在FBM中，基于流体动力的显式体积计算被集成。一个新的碰撞模型的基础上的论文Glowinski，约瑟夫，辛格和合著者检查处理粒子粒子和粒子壁的相互作用。数值试验表明，该方法为直接模拟多颗粒颗粒流动提供了一种非常有效的途径。版权所有© 2005年约翰威利父子有限公司。
Direct numerical simulation techniques for particulate flow by the fictitious boundary method (FBM) are presented. The flow is computed by a multigrid finite element solver and the solid particles are allowed to move freely through the computational mesh which can be chosen independently from the particles of arbitrary shape, size and number. The interaction between the fluid and the particles is taken into account by the FBM in which an explicit volume based calculation for the hydrodynamic forces is integrated. A new collision model based on papers by Glowinski, Joseph, Singh and coauthors is examined to handle particle–particle and particle–wall interactions. Numerical tests show that the present method provides a very efficient approach to directly simulate particulate flows with many particles. Copyright © 2005 John Wiley & Sons, Ltd.