A comparative study on design standards of screw conveyors in China,Germany,and the USA-Part Ⅱ:Discrete element method
作者机构：Technical University of MunichChair for Materials HandlingMaterial FlowLogisticsGarchingGermany Ibracon–Ingenieurbüro Dr.-Ing.RacklZornedingGermany School of Mechanical EngineeringTaiyuan University of Science and TechnologyTaiyuanChina
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2024年第92卷第9期
页 面：113-125页
核心收录：
基 金：the European Union's Horizon 2020 Program(H2020/2014–2020) under grant agreement No.654446
主 题：Discrete element method Design standard Screw conveyor Screw auger Bulk solid
摘 要：This part of the study aims to evaluate the advantages and disadvantages of technical standards of screw conveyors in China,Germany,and the USA for industrial *** source or determination method of empirical coefficients as well as the theoretical foundation of dimensioning-relevant diagrams in these standards is not explicitly documented in the ***,instead of less efficient on-site tests,the numerical simulation by discrete element method is *** on the geometrical and operational designs determined in three standards for horizontal,slightly inclined,and vertical conveyance of three representative bulk solids(barley,lignite,and sand),the potential influencing factors are *** constant particle and contact parameters,the potential deviations caused by particle models are ***,the accuracy of power consumption calculation of each standard and the divergence between accessible and required mass flows is comprehensively assessed based on the analysis of simulated *** main conclusions are drawn:(1)Particle fall back is barely considered by all three standards and leads to overestimated mass throughput;(2)The decrease in mass throughput caused by an increasing degree of filling can be compensated by slowing down the rotational speed.
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