Issue №: 2 (133)
The journal presents the results of scientific research and addresses current issues in the development and improvement of agricultural equipment and technologies, particularly in the design, production, and operation of machines and technical systems in the agro-industrial complex, including aspects of their efficient functioning.
MODELING THE MOTION AND PLACEMENT OF SMALL-SEED CROPS USING THE DISCRETE ELEMENT METHOD
Dmytro DATSIUK – PhD in Industrial Engineering, Senior Lecturer of the Vinnytsia National Agrarian University (Vinnytsia, Ukraine; e-mail: datsiuk.vnay@gmail.com, https://orcid.org/0000-0002-4614-2245).
Contemporary theoretical investigations of mechanical and technological processes related to seed motion under the influence of machine working elements are predominantly based on analytical approaches. These approaches typically result in complex systems of differential equations supplemented by initial and boundary conditions. Among advanced computational techniques for simulating the behavior of granular materials, such as seed mixtures, particular attention is given to methods founded on the discrete representation of matter, including particle dynamics and the Discrete Element Method (DEM).
The Discrete Element Method is a numerical engineering approach used to simulate the behavior and interaction of numerous discrete bodies, most commonly solid particles. The objective of this study is to simulate the motion and spatial distribution of small-seed crops using DEM within the CAE software environment Simcenter STAR-CCM+.
The simulation framework implemented in Simcenter STAR-CCM+ incorporates a range of physical and mathematical models, including a three-dimensional formulation, an unsteady implicit scheme, a single-component gas model representing air, and an ideal gas approximation. Additionally, turbulent airflow is described using the k–ε turbulence model alongside the Reynolds-averaged Navier–Stokes equations. The setup also includes segregated flow modeling, gradient and boundary condition methods, a Lagrangian multiphase approach, multiphase interaction modeling, DEM, and the influence of gravitational forces.
As a result of the conducted study, a mathematical model describing the random packing of small-seed crops within a container was developed. This enabled the derivation of a regression relationship for packing density as a function of the effective seed diameter and its coefficient of variation. The findings indicate that a decrease in the average effective diameter (Dμ) combined with an increase in the coefficient of variation (δ) leads to a higher packing density (φ) of spherical seeds. This phenomenon can be explained by the ability of smaller particles to occupy voids between larger ones.
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About the journal
G8 – Materials Science
G9 – Applied Mechanics
G10 – Metallurgy
G11 – Mechanical Engineering (by specializations)
The journal "Engineering, Energy, Transport AIC" is indexed according to the following databases and catalogs:
The All-Ukrainian scientific journal “Technology, energy, agriculture transport AIC” is an open-access scientific publication that publishes the results of original research, theoretical and applied developments, as well as scientific papers in the fields of engineering sciences, energy systems, and transport technologies of the agro-industrial complex.
The main objective of the scientific journal “Technology, energy, agriculture transport AIC” is to disseminate the results of modern scientific research and to promote the development of technical, energy, and transport solutions for the agro-industrial complex through the publication of scientific materials characterized by scientific novelty and practical significance in the field of design and modernization of machinery, equipment, and technologies.
The journal’s activities are focused on supporting the development of engineering science, stimulating the implementation of innovative approaches into industrial practice, as well as ensuring effective exchange of scientific achievements among researchers, educators, engineers, and other specialists in relevant fields.
Objectives of the Journal
To achieve its defined objective, the journal ensures the implementation of the following key tasks:
· publication of the results of fundamental and applied research covering the fields of applied mechanics, mechanical engineering, materials science, energy systems, electrical engineering, electromechanics, and transport systems of the agro-industrial sector;
· promotion of the implementation of advanced technical and technological developments aimed at improving the efficiency of machinery, equipment, and production processes;
· creation of conditions for active scientific exchange among research institutions, higher education institutions, industrial enterprises, and other interested organizations;
· support for the development of interdisciplinary research and expansion of cooperation among specialists in various fields of science and technology;
· promotion of the improvement of the scientific and technical level of research related to the design, modernization, and operation of technical equipment used in agro-industrial production;
· dissemination of information on modern achievements in science and technology and the implementation of innovative technologies in the fields of technical support, energy, and transport;
· development of a scientific information environment that facilitates effective scientific communication and the integration of national research into the international scientific community.
Publication frequency: 4 issues per year
Languages of publication: Ukrainian, English
Editor-in-Chief: Vitalii YAROPUD
State Registration: Decision of the National Council of Ukraine on Television and Radio Broadcasting № 1337 and № 1180. Media Identifier: R30-05173
EDRPOU Code: 00497236
Publisher ROR: https://ror.org/05m3ysc06
Publisher DOI Prefix: 10.37128
Technology, energy, agriculture transport AIC is a scholarly professional journal with a long-standing history and stable academic tradition, reflecting the evolution of engineering and technical sciences within the agro-industrial sector of Ukraine.
The journal was founded in 1997 under the title Bulletin of Vinnytsia State Agricultural Institute. According to the Resolution of the Presidium of the Higher Attestation Commission of Ukraine dated September 11, 1997, the publication obtained the status of a professional scientific journal, which enabled the publication of the main results of doctoral and candidate dissertations in technical sciences. From its inception, the journal positioned itself as an academic platform for addressing current issues of mechanization, electrification, and technical support of agricultural production. During 2001–2014, the journal was published under the title Proceedings of Vinnytsia National Agrarian University. Series: Technical Sciences (State Registration Certificate of Print Media KV No. 16644-5116 PR dated April 30, 2010). Throughout this period, a systematic approach to the selection and peer review of scientific manuscripts was established, the thematic scope of publications was expanded, and continuity of scientific directions as well as the development of sectoral engineering schools was ensured. Since 2015, the journal has been published under its current title, Technology, energy, agriculture transport AIC (State Registration Certificate No. 21906-11806 R dated March 12, 2016). The change of title reflected the expansion of the journal’s thematic coverage and its orientation toward interdisciplinary research in mechanical engineering, energy systems, electrical engineering, transport technologies, automation, and digital solutions for the agro-industrial complex.
