Establishment and verification of a model for the movement of pulverized sweet sorghum stalks in a rotary drum bioreactor by discrete element method
作者机构：Institute of New Energy TechnologyTsinghua UniversityBeijing 100084China Beijing Engineering Research Center for BiofuelsInstitute of New Energy TechnologyTsinghua UniversityBeijing 100084China
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2020年第18卷第4期
页 面：53-63页
核心收录：
学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理]
基 金：This work was supported by the National Key R&D Program of China(Grant number 2016YFE0108500)
主 题：Sweet sorghum particles Radial mixing Discrete element method Rotary drum bioreactor Parameter determination
摘 要：The mixing of raw materials in a rotary drum bioreactor is important for advanced solid-state fermentation ***,the shape,size,and other properties of pulverized sweet sorghum stalk particles are more complicated than those of the spherical *** this study,a soft rod-shaped discrete particle model was established and verified to simulate the mixing behavior of sweet sorghum stalk particles in a rotary drum *** were inspired by the particle shape and established a rod-shaped particle model by investigating the influence of the shape(length-diameter ratio)and size(diameter)on the particle packing(stack height and bed porosity).We used orthogonal simulations and extremum difference analysis to determine the main factors,optimum level,and groups of other *** on calibrated parameters,twelve sets of simulations of radial mixing in the drum were performed,and the results were compared with experiments conducted under identical operating *** average relative error between the simulation and the experiment was 10.95%,which indicates that they agreed well and that the simulation could predict the mixing process well.
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