Analysis and Experimental of Seeding Process of Pneumatic Split Seeder for Cotton

Li, Kezhi; Li, Shufeng; Ni, Xiaomin; Lü, Bo; Zhao, Bi

doi:10.3390/agriculture13051050

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…EDEM turns on the coupling switch and FLUENT selects a transient model and reads the DDPM coupling interface for CFD-DEM coupling [30]. To achieve a coupled simulation, the principle of the DDPM coupling interface is to exchange information between two mathematical models, CFD and DEM.…”

Section: Cfd-dem Coupled Seeding Simulation Experiments Based On Dens...mentioning

confidence: 99%

Design and Experimental Testing of a Centrifugal Wheat Strip Seeding Device

An,

Cheng,

Wang

et al. 2023

Agriculture

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Wheat sowing has the characteristics of wide and short sowing periods, and there are situations in which the suitable sowing period is missed. In order to meet the needs of high-speed sowing, a centrifugal wheat strip seeding device was designed, the principle of which is that rotating parts were mainly composed of centrifugal concave plate and guide strip rotating in the shell to provide the mechanical force and drive the airflow and then realize high-speed seeding. The influence of the rotational speed of the seed discharging plate, the seed feed rate, and the dip angle of the guide strip on the distribution of the flow field and trajectory of seeds in the device was analyzed. The aerodynamic characteristics of seeds and the distribution of the gas-phase flow field inside the seed displacer under airflow were analyzed by CFD–DEM coupled simulation. The effects of three operating parameters on the coefficient of variation of sowing uniformity (CVSU) and the row-to-row seeding amount coefficient of variation (RSCV) were clarified, and the simulation results were verified by bench experiments after secondary optimization. When the centrifugal concave plate rotational speed, seed feed rate, and guide strip angle were 408 rpm, 4938 grains/s, and 69°, the results showed that CVSU and RSCV were 1.12% and 2.39%, respectively, which was in line with the standards for grain strip seeders stipulated. The designed seed discharge device can sow 3.4 ha per hour. This study provides a reference for research of centrifugal airflow-assisted high-speed seeding devices for wheat.

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Section: Cfd-dem Coupled Seeding Simulation Experiments Based On Dens...mentioning

confidence: 99%

Design and Experimental Testing of a Centrifugal Wheat Strip Seeding Device

An,

Cheng,

Wang

et al. 2023

Agriculture

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“…The seed metering unit is the core component of seeding equipment, and its performance has a crucial impact on the efficiency of seeding [1][2][3]. Mechanical seed metering units are widely used worldwide due to advantages such as their simple structure, low cost, and good versatility [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Research on the Flexible Gradual Seed-Cleaning Method of the Brush-Type Single-Seed Soybean Planter

Li,

Zhao,

Yang

et al. 2024

Agriculture

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In response to the poor cleaning effect of the brush-type soybean seeder, a lightweight mechanism of the brush-type soybean seeder was optimized and designed. We proposed a progressive seed-cleaning method. Firstly, mechanical analysis was conducted on the soybean seeding process to prevent excessive clearing of individual soybean seeds initially filled into the orifices by the seeding brush. A formula for expressing the force exerted by the seeding brush on stabilizing individual soybean seeds in the orifice was derived. Secondly, an analysis of the progressive seeding principle was performed, and theoretical calculations were carried out for the progressive seeding curves within the x-y plane and along the direction of the z-axis. The progressive seeding curves were determined. Factors affecting the seeding efficiency were analyzed, including the plate’s speed, the initial angle of the seeding brush, and the initial distance between the seeding brush and the seeding plate. Based on the Box–Behnken central composite design theory, using the seeding tray’s rotational speed, the initial angle of the seeding brush, and the initial distance between the seeding brush and the seeding tray as experimental factors, orthogonal experiments were conducted with the leakage rate and the over-cleaning rate as the indicators for the evaluation, and the working parameters were optimized. Validation experiments showed that with a plate speed of 29 rpm, an initial angle of the seeding brush of 54°, and an initial distance between the seeding brush and the seeding plate of 11 mm, the results were as follows: a skip-seeding rate of 1.23% and an over-seeding rate of 0.66%, indicating a significant improvement in seeding performance. A comparative experiment was conducted with non-progressive cleaning brushes, and the test results showed that the progressive cleaning brush reduced the leakage rate by more than 1% and the over-cleaning rate by more than 0.5%.

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Integration of Edem by Altair Simulations for Efficient Distribution of Large and Small Seeds in Agricultural Systems of Vineyards and Fruit Trees

DUMITRU,

MARIN,

GHEORGHE

et al. 2024

INMATEH

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Efficient seed distribution is crucial for maximizing crop yields in agricultural systems, particularly in vineyards and orchards where both large and small seeds are used. This research investigates the integration of EDEM by Altair simulations to enhance the distribution process of these seeds. Utilizing discrete element modeling (DEM), the study provides a comprehensive analysis of seed behavior during dispersal, including interactions with varying terrain and environmental conditions. Through detailed simulations, the research identifies critical parameters that influence seed placement accuracy, such as seed size, distribution patterns, and environmental factors. The results reveal that EDEM simulations can optimize the distribution of seeds, leading to reduced seed wastage and improved crop density uniformity. This integration not only facilitates a more precise sowing process but also offers valuable insights into the dynamics of seed distribution in complex agricultural systems. The findings suggest that adopting this simulation technology can significantly advance precision agriculture practices, offering tangible benefits for the efficiency and productivity of vine and fruit tree cultivation.

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Analysis and Experimental of Seeding Process of Pneumatic Split Seeder for Cotton

Cited by 3 publications

References 16 publications

Design and Experimental Testing of a Centrifugal Wheat Strip Seeding Device

Design and Experimental Testing of a Centrifugal Wheat Strip Seeding Device

Research on the Flexible Gradual Seed-Cleaning Method of the Brush-Type Single-Seed Soybean Planter

Integration of Edem by Altair Simulations for Efficient Distribution of Large and Small Seeds in Agricultural Systems of Vineyards and Fruit Trees

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