Discrete Particle Simulation of Gas-Solid Flow in Air-Blowing Seed Metering Device

作     者：Zhengquan Li Pei Zhang Yongchang Sun Chenglin Zheng Liang Xu Dianyu E 

作者机构：Jiangxi Provincial Key Laboratory for Simulation and Modelling of Particulate SystemsJiangxi University of Science&TechnologyGanzhou341000China Energy Materials Computing CenterJiangxi University of Science&TechnologyNanchang330013China 

出 版 物：《Computer Modeling in Engineering & Sciences》 (工程与科学中的计算机建模（英文）)

年 卷 期：2021年第127卷第6期

页      面：1119-1132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：The authors would like to express appreciation for the support of Australia Research Council(IH140100035) Nature Science Foundation of China(51675218) Doctor Starting Foundation of Jiangxi University of Science and Technology(JXXJBS17078) Science and Technology Project of the Education Department of Jiangxi Province(GJJ180426) 

主　　题：Seed metering device CFD-DEM CAD simulation gas-solid flow 

摘      要：In this paper,the gas and seed flow characters in the air-blowing seed metering device are investigated by using the coupled computational fluid dynamics and discrete element method(CFD-DEM)in three dimensions(3D).The method of establishing boundary model based on the computer-aided design(CAD)drawing,has been used to build the boundary model of seed metering *** 3D laser scanning technique and multi-element method are adopted to establish the particle *** a combined numerical and experimental effort,using 3D CFD-DEM software,which is based on the in-house codes,the mechanisms governing the gas and solid dynamic behaviors in the seed metering device have been *** gas velocity field and the effect of different rotational speeds and air pressures on the seeding performance and particle velocity have been studied,similar agreements between numerical and experimental results are *** reveals that the 3D CFD-DEM model established is able to predict the performance of the air-blowing seed metering *** can be used to design and optimize the air-blowing seed metering device and other similar agriculture devices.