Journal of Intelligent Agricultural Mechanization
|
2024, 5(1): 1-11
• •
Simulation and experiment of distributors of different outlet types of pneumatic collection and discharging systems based on CFD-DEM coupling
Full
Guichuan LI
, Haiyu LI, Shaopeng YANG, Yuxiang HUANG, Xiaojun GAO, Zuoli FU
*
Affiliations
- College of Mechanical and Electronic Engineering, Northwest A & F University, Yangling 712100, China
LI Guichuan, Postgraduate; research interests: modern agricultural technology and equipment. E-mail: lgchuan@nwsuaf.edu.cn
About Author:
LI Guichuan, Postgraduate; research interests: modern agricultural technology and equipment. E-mail: lgchuan@nwsuaf.edu.cn
Published: 2024-02-15
doi: 10.12398/j.issn.2096-7217.2024.01.001
Outline
Pneumatic centralized seeding technology has the advantages of high seeding efficiency, wide adaptability and low seed damage. In the study, it was found that the type and structural parameters of the seed distributor had a great influence on the seeding uniformity of the pneumatic centralized seeding system. In this study, M-type, T-type and Y-type seed distributors were proposed respectively, and the overall structure and working principle of the pneumatic collection system were expounded. Taking wheat as the research object, the force and motion analysis of the seed particle group in the distributor under the action of airflow was carried out. Based on the CFD-DEM gas-solid coupling method, the simulation models of wheat seeds and distributors were established respectively. Taking the coefficient of variation of the uniformity of each row displacement as the index, the simulation test of the influence of different outlet types on the performance of the distributor was carried out, and the M-type seed distributor was determined as the optimal structure. On this basis, the influence of different outlet pipe inclination angles, top cover cone angles, inlet diameters, fillet radius and airflow velocity on the uniformity of the internal flow field of an M-type seed distributor was studied by single factor experiment, and the significant factors and their horizontal range were determined. The orthogonal test of three factors and three levels was carried out with the factors of outlet pipe inclination angle, top cover cone angle and fillet radius. The optimal structural parameters of the M-type seed distributor were determined by response surface analysis with the variation coefficient of uniformity of each row displacement as the index. The bench and field verification tests were carried out on the experimental farm of Northwest A & F University. The simulation and experimental results show that compared with the T-type and Y-type seed distributors, the M-type seed distributor significantly improves the seeding quality of wheat seeds, and the coefficient of variation of seeding uniformity is reduced by 7.41% and 3.72%, respectively. When the cone angle of the top cover is 117.03° and the angle of the outlet pipe is 59.50°, the corner radius is 69.46 mm, the uniformity of the seed distributor is the best, and the coefficient of variation of the uniformity of each row is 6.05%. The absolute errors between the simulation results of the M-type seed distributor and the bench and field test results were 1.00% and 1.55%, respectively. The research provides reference and technical support for the design of a pneumatic collecting and discharging system.
pneumatic centralized system
/
seed distributor
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CFD-DEM coupling
/
field experiment
李贵川, 李海宇, 杨少鹏, 黄玉祥, 高筱钧, 付作立.
基于CFD-DEM耦合的不同出口形式气力集排系统分配器仿真与试验.
智能化农业装备学报（中英文）,
2024
, 5
(1)
: 1
-11
.
DOI: 10.12398/j.issn.2096-7217.2024.01.001
Guichuan LI, Haiyu LI, Shaopeng YANG, Yuxiang HUANG, Xiaojun GAO, Zuoli FU.
Simulation and experiment of distributors of different outlet types of pneumatic collection and discharging systems based on CFD-DEM coupling[J].
Journal of Intelligent Agricultural Mechanization,
2024
, 5
(1)
: 1
-11
.
DOI: 10.12398/j.issn.2096-7217.2024.01.001
- National Key Research and Development Program of China(2021YFD2000405)
[1]
ABDOLAHZARE Z, MEHDIZADEH S A. Real time laboratory and field monitoring of the effect of the operational parameters on seed falling speed and trajectory of pneumatic planter [J]. Computers and Electronics in Agriculture, 2018, 145: 187-198.
[2]
DONG J X, GAO X J, ZHANG S L, et al. Design and test of the maize posture control and driving precision metering device for high-speed seeder [J]. Transactions of the Chinese Society for Agricultural Machinery, 2022, 53(11): 108-119.
[3]
GUO J, YANG Y, MUHAMMAD S M, et al. Design and simulation for seeding performance of high-speed inclined corn metering device based on discrete element method(DEM) [J]. Scientific Reports, 2022.
[4]
YATSKUL A, LEMIERE J P. Establishing the conveying parameters required for the air-seeders [J]. Biosystems Engineering, 2018, 166: 1-12.
[5]
LEI X, HU H, YANG W, et al. Seeding performance of air-assisted centralized seed-metering device for rapeseed [J]. International Journal of Agricultural and Biological Engineering, 2021, 14(5): 79-87.
[6]
LEI X L, LIAO Y T, LIAO Q X. Simulation of seed motion in seed feeding device with DEM-CFD coupling approach for rapeseed and wheat [J]. Computers and Electronics in Agriculture, 2016, 131: 29-39.
[7]
LIAO Y T, WANG L, LIAO Q X. Design and test of an inside-filling pneumatic precision centralized seed-metering device for rapeseed [J]. International Journal of Agricultural and Biological Engineering, 2017, 10(2): 56-62.
[8]
ZHANG X H, WANG Y Z, ZHANG L, et al. Design and experiment of wheat pneumatic centralized seeding distributing system [J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49(3): 59-67.
[9]
ZHAO J H, LIU L J, YANG X J, et al. Design and experiment of pneumatic seeding system of teff seeder [J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49(S1): 101-107.
[10]
XING H, ZANG Y, WANG Z M, et al. Design and parameter optimization of rice pneumatic seeding metering device with adjustable seeding rate [J]. Transactions of the Chinese Society of Agricultural Engineering, 2019, 35(4): 20-28.
[11]
DAI Y Z, LUO X W, ZHANG M H, et al. Design and experiments of the key components for centralized pneumatic rice dry direct seeding machine [J]. Transactions of the Chinese Society of Agricultural Engineering, 2020, 36(10): 1-8.
[12]
LEI X L, LIAO Y T, CONG J L, et al. Parameter optimization and experiment of air-assisted centralized seed-metering device of direct seeding machine for rape and wheat [J]. Transactions of the Chinese Society of Agricultural Engineering, 2021, 34(12): 16-26.
[13]
MA W P, YOU Y, WANG D C, et al. Optimal design and experiment of pneumatic and pneumatic collecting and discharging system of alfalfa cut-root reseeding and fertilizer applicator [J]. Transactions of the Chinese Society for Agricultural Machinery, 2021, 52(9): 70-78.
[14]
KUMAR V J F, DURAIRAJ C D. Influence of head geometry on the distributive performance of air-assisted seed drills [J]. Journal of Agricultural Engineering Research, 2000, 75(1): 81-95.
[15]
LI Z H, WANG D C, LIU G L, et al. CFD simulation and improvement of air-stream distributive metering device [J]. Transactions of the Chinese Society for Agricultural Machinery, 2009, 40(3): 64-68.
[16]
WANG Y, WILLIAMS K, JONES M, et al. CFD simulation methodology for gas-solid flow in bypass pneumatic conveying-A review [J]. Applied Thermal Engineering, 2017, 125: 185-208.
[17]
GUO F, LI X W, FAN C M, et al. Flow field characteristics of pneumatic conveying system in air seeder: A review [J]. Journal of Agricultural Mechanization Research, 2021, 43(2): 1-9, 15.
[18]
KLINZING G E. A review of pneumatic conveying status, advances and projections [J]. Powder Technology, 2018, 333: 78-90.
[19]
GAO X J, ZHOU Z Y, XU Y, et al. Numerical simulation of particle motion characteristics in quantitative seed feeding system [J]. Powder Technology, 2020, 367: 643-658.
[20]
MUDARISOV S, BADRETDINOV I, RAKHIMOV Z, et al. Numerical simulation of two-phase "air-seed" flow in the distribution system of the grain seeder [J]. Computers and Electronics in Agriculture, 2020, 168: 105151.
[21]
KIECKHEFEN P, PIETSCH S, DOSTA M, et al. Possibilities and limits of computational fluid dynamics-discrete element method simulations in process engineering: a review of recent advancements and future trends [J]. Annual Review of Chemical and Biomolecular Engineering, 2020, 11: 397-422.
[22]
HU H J, ZHOU Z L, WU W C, et al. Distribution characteristics and parameter optimization of an air-assisted centralized seed-metering device for rapeseed using a CFD-DEM coupled simulation [J]. Biosystems Engineering, 2021, 208: 246-259.
[23]
WANG L, LIAO Y T, WAN X Y, et al. Design and test on distributor device of air-assisted centralized metering device for rapeseed and wheat [J]. Transactions of the Chinese Society for Agricultural Machinery, 2021, 52(4): 43-53.
[24]
KONG X R, LIU J, YANG T Y, et al. Numerical simulation of feed pellet breakage in pneumatic conveying [J]. Biosystems Engineering, 2022, 218: 31-42.
[25]
LI H B, LI H, QI X D, et al. Simulation and parameter optimization of seed metering device based on CFD-DEM [J]. Journal of Intelligent Agricultural Mechanization, 2021, 2(2): 26-41.
[26]
YANG L, XIE Y H. Pneumatic conveying engineering [M]. Beijing: Mechanical Industry Press, 2006.
[27]
TRIPATHI N M, SANTO N, KALMAN H, et al. Experimental analysis of particle velocity and acceleration in vertical dilute phase pneumatic conveying [J]. Powder Technology, 2018(330): 239-251.
[28]
LI G C, LI H Y, LI X, et al. Establishment and calibration of discrete element model for buckwheat seed based on static and dynamic verification test [J]. Agriculture, 2023, 13: 1024.
[29]
GB/T 9478-2005, Testing methods of sowing in lines [S].
Year 2024 volume 5 Issue 1
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doi: 10.12398/j.issn.2096-7217.2024.01.001
- Receive Date：2023-11-20
- Online Date：2026-11-05
- Published：2024-02-15
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