Vibrations in engineering and technology


Issue №: 4 (103)

Published: 2021.12.24
DOI: 10.37128/2306-8744-2021-4

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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DOI: 10.37128/2306-8744-2021-4-5
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Melnyk Victoria, Doctor of Technical Sciences, Professor, Head of the Department of Biotechnology and Engineering Kyiv Polytechnic Institute. Igor Sikorsky, Faculty of Biotechnology and Biotechnology, vmm71@i.ua, 0936999568

Kosovа Vera Assistant of the Department of Biotechnology and Engineering, Kyiv Polytechnic Institute. Igor Sikorsky, Faculty of Biotechnology and Biotechnology, vera_62@ukr.net, 0665445843

Zhukovska Karina student, Kyiv Polytechnic Institute named after Igor Sikorsky, Faculty of Biotechnology and Biotechnology, zhukovskayakarina07@gmail.com, 0442049451



The absence of mechanical mixing devices and perfect heat and mass transfer and intensive aeration of the working fluid significantly increase the productivity and quality of the technological process, which determines the relevance of the studied problem. The aim is to increase the productivity of the technological process, which is solved by intensifying heat and mass transfer throughout the apparatus by remote artificial formation of the resonant state of the culture medium and the energy activity of the working fluid generated by this state. The task of the work is the artificial formation of the energy activity of the working fluid in the bioreactor using an ultrasonic beam. The research methodology is based on classical methods of theoretical mechanics, methods of mathematical physics, theory of thin shells, which ensures the reliability and reliability of the results. One of the possible technical solutions of artificial formation of energy activity of the working fluid in the bioreactor by means of an ultrasonic beam is given. The conditions for the occurrence of wave coincidence, which is accompanied by a sharp increase in energy activity along with minimal dissipation of radiation waves, are outlined. The nature of additional energy activity in the zones of caustic surfaces by two types of waves is explained. The process of culturing organisms, like most heterogeneous chemical reactions, directly depends on the amount of gas dissolved in the liquid and the formation and accumulation of the target product, in particular biomass. Thus, increasing the degree of dissolution of the gas in the liquid phase of the reactions will reduce its consumption and reduce energy consumption for aeration. The constructed calculation schemes and the received results allow to estimate adequacy of theoretical decisions by initial assumptions and, thus, to confirm their expediency for the further practical realization. The spatial resonance created inside the housing by ultrasonic emitters turbulizes the entire liquid-phase component of the housing and causes the gas bubbles to move without hindrance not only upwards, but also in other various directions, keeping them longer in the working fluid, thus enriching the mixture. creating conditions for intensive cell growth.

Keywords: bioreactor, energy activity, wave coincidence, caustic surfaces, cutoff frequency, ultrasonic beam

List of references

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About journal

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

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

The certificateof massmediaState 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.