An efficient multigrid-FEM method for the simulation of solid-liquid two phase flows

An efficient multigrid-FEM method for the simulation of solid-liquid two phase flows
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一种高效的固液两相流多重网格有限元方法

DOI:
10.1016/j.cam.2006.04.021
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发表时间:
2007-06
影响因子:
2.4
通讯作者:
Wan, Decheng
Wan, Decheng
中科院分区:
数学2区
文献类型:
--
作者:
Turek, Stefan;Wan, Decheng

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提出了一种有效的多网格有限元方法,可用于固液两相流的大量运动颗粒的详细模拟。采用一种基于有限元背景网格的显式虚拟边界方法来处理流体与颗粒之间的相互作用,该方法覆盖了整个计算域,可以独立于任意形状、大小和数量的颗粒进行选择。由于该方法对流体部分、力的计算和粒子的运动进行了后续处理,因此可以有效地模拟具有大量粒子的真实颗粒流动。首先通过一系列简单的测试案例验证了所提出的方法,然后作为举例,给出了三个大圆盘落入2000个小颗粒的模拟,以及10000个颗粒在一个空腔中的沉降。
An efficient multigrid-FEM method for the detailed simulation of solid–liquid two phase flows with large number of moving particles is presented. An explicit fictitious boundary method based on a FEM background grid which covers the whole computational domain and can be chosen independently from the particles of arbitrary shape, size and number is used to deal with the interactions between the fluid and the particles. Since the presented method treats the fluid part, the calculation of forces and the movement of particles in a subsequent manner, it is potentially powerful to efficiently simulate real particulate flows with huge number of particles. The presented method is first validated using a series of simple test cases, and then as an illustration, simulations of three big disks plunging into 2000 small particles, and of sedimentation of 10,000 particles in a cavity are presented.
DOI: 10.1002/fld.1129
发表时间: 2006-06
影响因子: 1.8
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