计算力学学报2024，Vol.41Issue(4)：674-681,8.DOI:10.7511/jslx20230222001
出口振动筒仓颗粒流动过程的离散元分析
Discrete element-based analysis of particle flow processes in silos with outlet vibration
摘要
Abstract
The particle flow W of granular materials in silos is restricted by the outlet size D.When the outlet size is small,the particle flow is prone to clogging.It is of great significance to study the method of unplugging for particle transport and dredging.In this paper,a quasi-two-dimensional silo with horizontal simple harmonic vibration at the outlet is constructed using the discrete element method,and the effects of the outlet vibration amplitude A,frequency f,and the outlet vibration velocity V and vibration acceleration Γ determined by these two parameters on the changes of spherical particle flow and particle flow rates in the silo are discussed in detail.The results show that the trend of particle flow with outlet vibration intensity is related to the silo outlet size,when D＜5,W increases with the increase of vibration acceleration Γ or vibration velocity V,and W is a function about vibration velocity V;when D＞5,W decreases with the increase of vibration acceleration Γ or vibration velocity V.The amplitude and frequency affect the particle flow rate by changing the particle longitudinal flow range and flow velocity fluctuation frequency,so that W is no longer a function of vibration velocity V.关键词
离散元方法/颗粒介质/解堵塞过程/振动速度/振动加速度Key words
discrete element method/granular materials/flow process/vibration speed/vibration acceleration分类
数理科学引用本文复制引用
王鑫洋,赵婷婷,梁绍敏,张祺..出口振动筒仓颗粒流动过程的离散元分析[J].计算力学学报,2024,41(4):674-681,8.基金项目
国家自然科学基金(12102994 （）
12072217) （）
山西省自然科学基金(2021032124158)资助项目. （2021032124158）
