标题：CFD-DEM study of air entrainment in falling particle plumes
作者：CHU, K.W. ;WANG, Y. ;Zheng, Q.J. ;YU, A.B. ;PAN, R.H.
作者机构：[CHU, K.W. ] School of Qilu Transportation, Shandong University, Jinan; 250002, China;[PAN, R.H. ] Xiamen Longking Bulk Materials Science and Engineer 更多
通讯作者地址：[CHU, K.W] School of Qilu Transportation, Shandong UniversityChina;
关键词：Air entrainment; Bulk solids handling; Computational fluid dynamics; Discrete element method; Dust control
摘要：Dust emission due to air entrainment in falling solids/particle plumes is a common and serious environmental issue in industry. The prediction of the flowrate of air induced by falling particles is pivotal for the design of dust removal equipment in practice but until now there is still limited reliable correlations available. In this work, the process of air entrainment in falling plumes of particles is numerically studied by a combined approach of Computational Fluid Dynamics (CFD) and Discrete Element Method (DEM) (CFD-DEM). A 2D CFD-DEM model is first compared against two 3D models. Then the 2D model is validated against experiments qualitatively at small scale and quantitatively at large scale. Finally the model is used to predict the effect of various important variables including drop height and solids mass flowrate at an industrial scale. © 2019 Elsevier B.V.