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      Simulation analysis of fertilizer discharge process using the Discrete Element Method (DEM)

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          Abstract

          Fertilizer discharge process is a critical part of fertilizer application, as it affects the fertilizer discharge rate and uniformity of fertilizer application. In this study, a spiral grooved-wheel fertilizer discharge device was designed to replace the conventional straight grooved-wheel. Comparisons of the fertilizer discharge performance of the two grooved-wheel types were performed through tests and simulations using the discrete element method (DEM). The discharge performance of the two discharge devices was assessed by measuring the discharge mass rate, discharge uniformity, and the falling velocity of the fertilizer particles. Results showed that under similar conditions, the fertilizer discharge mass rate of the spiral grooved-wheel was higher than that of the straight grooved-wheel. The fertilizer discharge uniformity of the spiral grooved-wheel was much better than that of the straight grooved-wheel. The average falling velocity of fertilizer particles through the discharge spout was higher under the spiral grooved-wheel. The relative errors between the test and simulation results for the discharge mass rates, discharge uniformity, and particle falling velocities of the spiral grooved-wheel were all less than 10%. The developed spiral grooved-wheel exhibited a better performance than the conventional straight grooved-wheel, in all the aspects examined. The results serve as a theoretical basis for guiding the design of high-performance fertilizer applicators.

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          Physical properties of sweet corn seed (Zea mays saccharata Sturt.)

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            Evaluation of Seed Distribution Uniformity of a Multi-flight Auger as a Grain Drill Metering Device

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              Influences of structure parameters of straight flute wheel on fertilizing performance of fertilizer apparatus

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                Author and article information

                Contributors
                Role: ConceptualizationRole: Data curationRole: Formal analysisRole: InvestigationRole: MethodologyRole: Project administrationRole: ResourcesRole: SoftwareRole: ValidationRole: VisualizationRole: Writing – original draftRole: Writing – review & editing
                Role: ConceptualizationRole: Data curationRole: Formal analysisRole: MethodologyRole: Project administrationRole: Software
                Role: Validation
                Role: Validation
                Role: Validation
                Role: Data curationRole: Validation
                Role: MethodologyRole: Validation
                Role: Supervision
                Role: ConceptualizationRole: Funding acquisitionRole: InvestigationRole: MethodologyRole: Project administrationRole: ResourcesRole: SupervisionRole: VisualizationRole: Writing – review & editing
                Role: Editor
                Journal
                PLoS One
                PLoS ONE
                plos
                plosone
                PLoS ONE
                Public Library of Science (San Francisco, CA USA )
                1932-6203
                16 July 2020
                2020
                : 15
                : 7
                : e0235872
                Affiliations
                [1 ] College of Engineering, South China Agricultural University, Guangzhou, China
                [2 ] Rokupr Agricultural Research Center (RARC), Sierra Leone Agricultural Research Institute (SLARI), Freetown, Sierra Leone
                University of New South Wales, AUSTRALIA
                Author notes

                Competing Interests: The authors have declared that no computing interest exist.

                Author information
                http://orcid.org/0000-0002-7987-8929
                Article
                PONE-D-20-13766
                10.1371/journal.pone.0235872
                7365441
                32673343
                e76d6b78-f5d7-42a1-895c-ef0141bd27c8
                © 2020 Bangura et al

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 10 May 2020
                : 23 June 2020
                Page count
                Figures: 10, Tables: 5, Pages: 16
                Funding
                Funded by: the National Key R&D Program of China
                Award ID: 2018 YFD0200303
                Award Recipient :
                Funded by: the Natural Science Foundation of China
                Award ID: 51875217
                Award Recipient :
                Funded by: the key R&D Program of Guangdong
                Award ID: 2019B020221003
                Award Recipient :
                Funded by: the Science Foundation of Guangdong for Distinguished Young Scholars
                Award ID: 2019B151502056
                Award Recipient :
                Funded by: Earmarked Fund for Modern Agro-industry Technology Research System (CN)
                Award ID: CARS-01-43
                Award Recipient :
                The research was funded by the National Key R&D Program of China, grant number 2018 YFD0200303, the Natural Science Foundation of China, grant number 51875217, the key R&D Program of Guangdong, grant number 2019B020221003, the Science Foundation of Guangdong for Distinguished Young Scholars, grant number 2019B151502056, the Earmarked Fund for Modern Agro-industry Technology Research System, grant number CARS-01-43 (L.Q).
                Categories
                Research Article
                Biology and Life Sciences
                Agriculture
                Agrochemicals
                Fertilizers
                Physical Sciences
                Chemistry
                Chemical Compounds
                Organic Compounds
                Urea
                Physical Sciences
                Chemistry
                Organic Chemistry
                Organic Compounds
                Urea
                Research and Analysis Methods
                Simulation and Modeling
                Physical Sciences
                Physics
                Classical Mechanics
                Motion
                Velocity
                Biology and Life Sciences
                Agriculture
                Crop Science
                Crops
                Physical Sciences
                Chemistry
                Chemical Elements
                Biology and Life Sciences
                Agriculture
                Physical Sciences
                Mathematics
                Geometry
                Radii
                Custom metadata
                All relevant data are within the manuscript and its Supporting files.

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