Motion simulation of oat and vetch seeds in distributors based on DEM-CFD

被引:0
|
作者
Liao, Yangyang [1 ]
You, Yong [1 ]
Wang, Decheng [1 ]
Hui, Yunting [1 ]
Xing, Kai [2 ]
Sun, Wenting [2 ]
机构
[1] China Agr Univ, Coll Engn, Beijing 100083, Peoples R China
[2] Chinese Acad Agr Mechanizat Sci, Beijing, Peoples R China
基金
国家重点研发计划;
关键词
Oat seeds; Vetch seeds; Mixed broadcasting; Distributor; Gas solid two-phase flow; NUMERICAL-SIMULATION; COUPLING SIMULATION; OPTIMIZATION; RAPESEED; DEVICE; HEAD;
D O I
10.1016/j.compag.2025.110176
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
Improving the uniformity of seed particle distribution is the key to the research of air blown collection and discharge seed metering devices. Analyzing the movement process of particles can help improve seed metering performance. In this study, the DEM-CFD (discrete element method and computational fluid dynamics) coupled simulation model was used to simulate the motion characteristics of oat seeds, vetch seeds, and mixed seeds in an air blown manifold distributor. From the perspectives of airflow field and seed motion, the effects of distributor cap shape and mixed seed supply ratio on the uniformity performance of oat seeds, vetch seeds, and their mixed seeds were analyzed. The coefficient of variation of seeding quantity in each row and the precision of discharging mixed seeds ratio were selected to evaluate the seed motion characteristics. The results showed that as the inlet velocity of the airflow increased, the seeds discharged from the distribution pipe decreased. When the inlet velocity of the airflow was 25 m/s, the coefficient of variation of seeding quantity in each row of seeding in the distribution pipe was the least and less than 5 %. The use of a convex distributor cap resulted in the best uniformity of the arrangement of vetch seeds, while the use of a conical distributor cap resulted in the best uniformity of oat seed arrangement. For the seeding of mixed seeds, the convex distributor better promoted the stable movement of the seeds, exhibited better seeding uniformity performance, and could effectively reduce the frequency of contact between the seeds and the distribution pipe wall, avoiding sudden changes in the velocity vector of the seeds. The convex distributor cap also exhibited superior seeding uniformity performance for different mixed seed supply ratios. This result will help to improve understanding of the distribution characteristics of mixed seeds and optimize the distributor structure of the air blown collection and discharge seed metering device.
引用
收藏
页数:15
相关论文
共 50 条
  • [31] DEM-CFD simulation of helium flow characteristics in randomly packed bed for fusion reactors
    Wu, Zhenxing
    Wu, Yingwei
    Tang, Simiao
    Liu, Di
    Qiu, Suizheng
    Su, G. H.
    Tian, Wenxi
    PROGRESS IN NUCLEAR ENERGY, 2018, 109 : 29 - 37
  • [32] Simulation of underwater concrete movement in flowing water using DEM-CFD coupling method
    Yan, Weishuo
    Cui, Wei
    Qi, Lan
    CONSTRUCTION AND BUILDING MATERIALS, 2022, 319
  • [33] Numerical simulation of ground movement induced by water and sand gushing in subway through fault based on DEM-CFD
    Chen, Fan
    Wang, Yingchao
    Jiang, Wen
    Zheng, Shunhua
    COMPUTERS AND GEOTECHNICS, 2021, 139
  • [34] Study of the creeping of irregularly shaped Martian dust particles based on DEM-CFD
    Hou, Xuyan
    Ding, Tianxiang
    Deng, Zongquan
    Yu, Zhaoji
    Xue, Pingping
    Cao, Pan
    Tang, Tianfeng
    POWDER TECHNOLOGY, 2018, 328 : 184 - 198
  • [35] Research on reflux in deep-sea mining pump based on DEM-CFD
    Li Yuanwen
    Liu Shaojun
    Hu Xiaozhou
    MARINE GEORESOURCES & GEOTECHNOLOGY, 2020, 38 (06) : 744 - 752
  • [36] Transient DEM-CFD simulation of solid and fluid flow in a three dimensional blast furnace model
    Bambauer, F.
    Wirtz, S.
    Scherer, V.
    Bartusch, H.
    POWDER TECHNOLOGY, 2018, 334 : 53 - 64
  • [37] IMPROVED DEM-CFD MODEL AND VALIDATION:A CONICAL-BASE SPOUTED BED SIMULATION STUDY
    RONG Liang-wan Department of Applied Mechanics and Engineering
    JournalofHydrodynamics, 2010, 22 (03) : 351 - 359
  • [38] Coarse-Grained DEM-CFD Simulation of Fluidization Behavior of Irregular Shape Sand Particles
    Xu, Xiaomeng
    Li, Cheng
    Gao, Xi
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2022, 61 (25) : 9099 - 9109
  • [40] Investigation of optimum design for nanoparticle dispersion in centrifugal bead mill using DEM-CFD simulation
    Nagata, Yu
    Minagawa, Masaya
    Hisatomi, Shosei
    Tsunazawa, Yuki
    Okuyama, Kyoko
    Iwamoto, Motonori
    Sekine, Yasuyoshi
    Tokoro, Chiharu
    ADVANCED POWDER TECHNOLOGY, 2019, 30 (05) : 1034 - 1042