Development of a coupled discrete element (DEM)–smoothed particle hydrodynamics (SPH) simulation method for polyhedral particles
Development of a coupled discrete element (DEM)–smoothed particle hydrodynamics (SPH) simulation method for polyhedral particles
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DOI：
10.1007/s40571-015-0097-9
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发表时间：
2016-01
影响因子：
3.3
通讯作者：
B. Nassauer;T. Liedke;M. Kuna
中科院分区：
文献类型：
--
作者：
B. Nassauer;T. Liedke;M. Kuna
本文将离散元法（DEM）与多面体粒子和光滑粒子流体动力学（SPH）直接耦合。这两种模拟技术通过固体DEM颗粒和流体SPH颗粒之间的相互作用力以两种方式完全耦合。因此，这种模拟方法提供了一种可能性，以模拟多面体，锋利的边缘颗粒的个人运动，以及这些颗粒周围的流体饱和的颗粒物质，发生在许多技术过程，如线切割，研磨或研磨流场。耦合方法的例子和验证的模拟颗粒在剪切流，这表明与解析解吻合良好。
In the present paper, the direct coupling of a discrete element method (DEM) with polyhedral particles and smoothed particle hydrodynamics (SPH) is presented. The two simulation techniques are fully coupled in both ways through interaction forces between the solid DEM particles and the fluid SPH particles. Thus this simulation method provides the possibility to simulate the individual movement of polyhedral, sharp-edged particles as well as the flow field around these particles in fluid-saturated granular matter which occurs in many technical processes e.g. wire sawing, grinding or lapping. The coupled method is exemplified and validated by the simulation of a particle in a shear flow, which shows good agreement with analytical solutions.