Separation and cleaning of Leymus chinensis seed threshing material based on gas-solid coupling

作     者：Zongyu Ma Qihao Wan Weiwei Liu Yingzhong Zhang Ku Bu Wenliang Du 

作者机构：School of Mechanical EngineeringDalian University of TechnologyDalian 116024China Institute of Grassland ResearchChinese Academy of Agricultural SciencesHohhot 010010China College of Mechanical and Electrical EngineeringInner Mongolia Agricultural UniversityHohhot 010018China 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2023年第16卷第5期

页      面：283-290页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Science and Technology Major Special Projects of Inner Mongolia Autonomous Region(Grant No.2020ZD0002) Key Research and Achievements Transformation Plan Project of Inner Mongolia Autonomous Region(Grant No.2022YFHH0053) the Inner Mongolia Autonomous Region Natural Science Foundation(Grant No.2023MS03013) 

主　　题：cleaning performance gas-solid coupling Leymus chinensis seeds numerical simulation separation and cleaning 

摘      要：The aim of this study was to improve the cleaning performance of the Leymus chinensis seed threshing material separation and cleaning device,and to clarify the movement law and characteristics of the Leymus chinensis seed threshing material during the cleaning process.A numerical simulation of the separation and cleaning process of Leymus chinensis seed threshing material was performed using the computational fluid dynamics discrete element *** to the streamline distribution of the gas-solid coupling,the movement of Leymus chinensis seeds during the cleaning process was ***,the average speed and quantity of Leymus chinensis seed threshing material in different separation and cleaning zones were studied over ***,the distribution principle of the threshing material was obtained,and a verification test of the under-sieve distribution was *** test results showed that the numerical simulation was consistent with the distribution trend of the *** cleaning performance verification test showed that the impurity content and the loss rate of the separation and cleaning device were 27.3%and 3.3%,where the test results,compared with those of the numerical simulation,showed a reduction of 1.5%and 0.8%,*** is feasible to apply the theory and method of gas-solid coupling to simulate the separation and cleaning process of Leymus chinensis seeds.