文献类型: 外文期刊
作者: Gao, Xiaojun 1 ; Cui, Tao 1 ; Zhou, Zongyan 2 ; Yu, Yingbo 1 ; Xu, Yang 1 ; Zhang, Dongxing 1 ; Song, Wei 4 ;
作者机构: 1.China Agr Univ, Coll Engn, Beijing 100083, Peoples R China
2.Monash Univ, Dept Chem Engn, ARC Res Hub Computat Particle Technol, Clayton, Vic 3800, Australia
3.Jiangxi Univ Sci & Technol, Int Res Inst Resources Energy Environm & Mat, Nanchang 330013, Jiangxi, Peoples R China
4.Hebei Acad Agr & Forestry Sci, Inst Grain & Oil Crops, Shijiazhuang 050035, Hebei, Peoples R China
关键词: Discrete element method; High-speed seed metering device; Metering performance; Multiple seeding; Leakage
期刊名称:ADVANCED POWDER TECHNOLOGY ( 影响因子:4.217; 五年影响因子:3.78 )
ISSN: 0921-8831
年卷期: 2021 年 32 卷 5 期
页码:
收录情况: SCI
摘要: This paper presents a numerical study on the motions of seed particles in a novel high-speed seed metering device based on the discrete element method. The effects of key parameters, including inlet velocity of particles, feeding rates and the angle of seed cleaning element, are investigated by a series of controlled numerical experiments. The results show that in the seed filling area of the device, a better match of particle velocity and the tangential linear velocity of the seeding plate can improve the seed filling performance. The number of particles remaining in the metering device is an important factor that affects the device performance. A large number of particles in the device results in more multiple seeding, and a small number causes more leakage seeding. Under the conditions of the seeding plate rotational speed at 194.5 rpm (corresponding to the high ground speed of 14 km/h), feeding rate at similar to 14 seeds/s can ensure that around 24 seed particles are maintained in the device which generates minimum leakage and multiple seeding. The studies of the effect of the seed cleaning element angle show that an appropriate angle (e.g., 30 degrees) can effectively enhance the clearing ability, increase the uniform stability of particles backflow, and improve the seeding performance. (C) 2021 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
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