Issue №: 2(113)
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.
NUMERICAL SIMULATION OF THE WASTE SEPARATION PROCESS OF A SUNFLOWER SEED MIXTURE IN THE LIQUIDATION CHAMBER OF AN AERODYNAMIC SEPARATOR
Kudriavtsev Ihor – recipient of the scientific degree of Doctor of Philosophy at the Dnipro State Agrarian and Economic University (St. S. Efremova, 25, Dnipro, Ukraine, 49000, e-mail: igorrabota898@gmail.com, https://orcid.org/ 0000-0002-9939-7014).
Seed waste and debris contain 30–50 % of grain or oil impurities suitable for further use, making them a promising raw material for processing. Mechanical sorting on specialized machines is the only way to extract this valuable raw material. The aerodynamic process of separating sunflower seed mixture waste into husk, kernels, and other impurities is an important part of processing at an oil extraction plant, but the issue of incomplete separation of husk from kernels reduces processing quality and leads to food product losses. Optimizing the separation process of sunflower seed mixture waste is a relevant task.
The aim of the work is to conduct numerical modeling of the process of separating sunflower seed mixture waste in the vacuum chamber of a developed aerodynamic separator and to justify its rational design and technological parameters.
As a result of the first stage of numerical modeling of the separation process of sunflower seed mixture waste components in the vacuum chamber, trajectories and distributions of the components were obtained. Using Wolfram Cloud, regression equations were calculated for the dependence of the distance between the peaks of the distributions of sunflower husk and small particles (Δy`) on the effective diameter (Dp), feed rate of components (Vp), and curvature radius of the upper edge of the vacuum chamber (R).
It was found that with Dp = 0.01 m, Va = 3.35 m/s, R = 0.054 m, the average distance between the peaks of the husk and small particles distributions is Δy` = 0.443 m. In the Simcenter Star-CCM+ model, the rational value for the intersection point of the mixture component distributions (y`int) was obtained as 0.43 m.
At the second stage of modeling the separation process in a column-type aerodynamic separator, regression equations for the separation coefficient (δ) were calculated based on the content of components in the seed mixture (ψh, ψd, ψk), feed rate (q), and airflow velocity (Va).
Rational values of factors were established to ensure high separation quality with sufficient productivity and reduced energy consumption: q = 133 kg/h, Va = 2.46 m/s, with the separation coefficient δ = 0.92.
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About the journal
The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine
(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)
Old version of the site: http://vibrojournal.vsau.edu.ua/
The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:
The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University
The journal is devoted to highlighting current issues in engineering, mechanical engineering, and technological processes, including the study of dynamic and oscillatory phenomena in technical systems, the application of mathematical methods for process modeling and analysis, as well as the presentation of results of design-engineering and technological developments. Particular attention is given to the study of vibration processes and their application in modern technologies.
The purpose of the scientific journal “Vibrations in Engineering and Technologies” is to disseminate the results of fundamental and applied research in the field of engineering sciences aimed at developing theoretical foundations and practical approaches to the design, analysis, and improvement of machines, materials, and technological processes, including the use of vibration and oscillatory effects in various sectors of production.
The publication is focused on the formation of a modern scientific and informational environment for the effective exchange of research results, support of innovative development, and implementation of advanced technical solutions in industry, agro-industrial production, and related fields.
The journal promotes the development of interdisciplinary research, the integration of modern engineering approaches, and the enhancement of the efficiency of technological processes and technical systems, including through the rational use of vibration phenomena.
Objectives of the Scientific Journal
To achieve its stated purpose, the journal addresses the following key objectives:
dissemination of results of fundamental and applied scientific research in the fields of mechanics, mechanical engineering, technological processes, machine dynamics, and equipment, as well as in areas related to the application of vibration phenomena in engineering and technologies;
promotion of research aimed at the creation and improvement of machines, mechanisms, and technological equipment based on oscillatory and vibration processes;
support for the implementation of modern technological solutions focused on improving productivity, energy efficiency, and reliability of technical systems;
обеспечение scientific exchange of research results among research institutions, higher education establishments, and industrial enterprises;
development of interdisciplinary cooperation among researchers in the fields of mechanics, materials science, material processing technologies, and automation of technological processes;
dissemination of modern scientific achievements and advanced technologies related to the application of vibration processes in production and technical systems.
Publisher Vinnytsia National Agrarian University
In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published 119 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Ihor Kupchuk, Candidate of Technical Sciences, Associate professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agricultural Industry Faculty of Engineering and Technology Vinnytsia National Agrarian University is the chief editor of the "Vibrations in engineering and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.
