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Vibrations in engineering and technology

space SCIENTIFIC JOURNALS OF VINNITSA NATIONAL AGRARIAN UNIVERSITY

Issue №: 2(113)

Published: 2024.08.30
DOI: 10.37128/2306-8744-2024-2


Description:
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.

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NUMERICAL SIMULATION OF THE WASTE SEPARATION PROCESS OF A SUNFLOWER SEED MIXTURE IN THE LIQUIDATION CHAMBER OF AN AERODYNAMIC SEPARATOR

DOI: 10.37128/2306-8744-2024-2-14
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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).

Annotation

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.

 

Keywords: seed, mixture, components, aerodynamic separator, rarefaction chamber, air flow, parameters, speed, efficiency, modeling.

List of references

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Topics of the journal:

The journal "Vibrations   in engineering  and technology" presents materials on the following issues

• Theory of processes and machines
• Mechanical Engineering and materialprocessing
• Processing and food production

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:

 

 

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ISSN (print): 2306-8744
DOI: 10.37128/2306-8744

The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University

Kind of publication: journal
Type of publication : Scientific
Publication status: Domestic
Year of founding:
Periodicity: 4 times a year
Extent: 18.75 nominal printed pages
ISSN: 2306-8744 (printed version), (online)
Language of edition  : (mixed languages) Ukrainian, English
The scope of the distribution and the category of readers: national, foreign, teaching staff, scientists, businessmen.
Periodical is included in the list of scientific professional editions of Ukraine approved by the Order of Ministry of Education and Sciences of Ukraine from 21.12.2015 No. 1328.
The journal "Vibrations in engineering and technology" is included in the "Catalogue of periodicals of Ukraine".
Journal subscription can be executed in each post office department.
 Subscription Index is  99720.

 

Old version of site: http://vibrojournal.vsau.edu.ua/

History of journal:

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  94 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Kaletnik H.M  PhD , professor, academician NAAS 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.