摘要
目的:分析双轴桨叶式混合机内食品粉体颗粒的运动混合特性,优化验证混合机结构。方法:采用EDEM软件对3种不同尺寸的食品粉体颗粒按比例混合进行仿真,以后处理Bin Groups建立混合箱观察混合情况,并通过研究不同类型食品粉体之间的颗粒数量来进行评估。结果:在t=5 s时,3种粉体食品颗粒所对应的方格中颗粒数量还存在一定的差距,但是基本相差不大,3种粉体食品颗粒的混合程度已经很高;3种粉体食品颗粒之间的接触随时间的变化趋势大体上是相同的,随着时间的增加,各种粉体食品之间的接触数量也随之增加,待t=8 s之后,各种粉体食品颗粒之间的接触数量基本达到稳定值。结论:采用离散元法可以有效分析桨叶式混合机中粉体食品的混合情况。
Objective:In order to analyze the movement and mixing characteristics of food powder particles in the double-shaft paddle mixer to optimize the verification of the mixer structure.Methods:The EDEM software was used to simulate the proportional mixing of three different sizes of food powder particles,and then Bin Groups would build a mixing box to observe the mixing situation,and evaluate it by studying the number of particles between different types of food powder.Results:At t=5 s,there was still a certain gap in the number of particles in the squares corresponding to the three types of powdered food particles,but the difference was basically the same.The mixing degree of the three types of powdered food particles was already very high;The change trend of the contact between food particles over time was basically the same.As time increasing,the number of contacts between various powdered foods also increased.After t=8 s,the number of contacts between particles between various powdered foods basically reached a stable value.Conclusion:The discrete element method can effectively analyze the mixing of powdered food in the paddle mixer.
作者
徐玉菁
XU Yu-jing(Chengxian College,Southeast University,Nanjing,Jiangsu 210088,China)
出处
《食品与机械》
北大核心
2021年第8期115-118,125,共5页
Food and Machinery
基金
高校哲学社会科学研究基金指导项目(编号:2020SJA2214)。
关键词
离散元
双轴桨叶式
混合机
粉体食品
混合效率
discrete element
double-shaft paddle type
mixer
feed
mixing efficiency
