点击次数：

论文类型：期刊论文

发表时间：2012-07-13

发表刊物：Advanced Materials Research

收录刊物：EI、CPCI-S、Scopus

卷号：550-553

页面范围：3201-3205

ISSN号：9783037854556

关键字：Discrete Element Method; Granular Flow; Particle; Waved Plates; Stress

摘要：Using a two-dimensional Discrete Element Method (DEM) computer simulation, dense granular flows with the particle size range of 2-3 mm were studied between two vertical waved plates. The hydrodynamic characteristics, such as flow pattern, distribution of stress, velocity and trajectory of particles were analyzed in the process of granular flow. The results were compared to those of the flows between two vertical flat plates. The results indicated that the transient stress between waved plates was heterogeneous; the zigzag-like pressure profiles on the waved pate increased. Conclusions could be drawn that the formation of dense particle clusters disturbed spatial homogeneity and resulted in collisional anisotropy which was propitious to enhance the process of momentum, heat and mass transmission.