文献类型：期刊文献

英文题名：Experimental and CPFD Numerical Study on Hopper Discharge

作者：Lu, Haifeng[1];Guo, Xiaolei[1];Zhao, Wei[1];Gong, Xin[1];Lu, Jun[1]

机构：[1]E China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai Engn Res Ctr Coal Gasificat, Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：53

期号：30

起止页码：12160

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20143218041021);WOS:【SCI-EXPANDED(收录号:WOS:000339694100030)】；

基金：This work was supported by the National Natural Science Foundation of China (21006027, 21206041), the Fundamental Research Funds for the Central Universities, and China Postdoctoral Science Foundation funded project (2012M520847). Especially, the authors thank the anonymous reviewers for their helpful suggestions on the quality improvement of this article.

语种：英文

外文关键词：Granular materials - Glass - Particle size analysis - Particle size

摘要：This study investigated the applicability of computational particle fluid dynamic (CPFD) numerical scheme for simulating flows in a 3-D hopper. A glass bead with a particle size distribution was used as the experimental material, which is characterized on the limit between group A and group B powder. The discharge of glass bead particles was simulated using the CPFD model. The flow snapshots and the solid discharge rates were successfully captured by the CPFD calculations and compared well with the experimental results. It therefore confirmed a good feasibility of CPFD method to simulate the complex flow in the 3-D hopper. Consequently, the snapshots as well as the concrete values of the solid volume fraction, particle and gas velocities, and pressure in the hopper were given by the CPFD model. Based on the simulation results and the hopper structure, three flow regions were divided and flow characteristics in these regions were analyzed. It shows dense-flow in the hopper region, dilute-flue in the transition region, and the negative pressure gradient in the standpipe.