Research

Current research
Basic trend of current research is Investigation of electrophysical properties in liquid dielectrics. Electric conduction of liquid dielectric in constant electric field is often complicated by formation of volume charges in near-electrode areas. For Investigation of conduction process the following methods are used: - method of charging currents investigation; - setting for discharging currents measurements; - method of reversal currents investigation; - setting for study of field distribution with using Kerr effect. Measurements are made in dependence on time applied to a dielectric liquid in electric field, on applied field strength, ambient temperature. Influence of interelectrode distance on the results is also investigated. Experimental investigations allow to determine such parameters as value of conductivity, value and signs of mobility of charge carriers and their coefficient of diffusion under field removal, coefficients of generation, recombination, thermal energy activation of electric conduction and mobility
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Past research

Expertise Summary

The experiments allow to make the attempts of process simulation of dielectric liquids conductivity, including the use of "attenuated" memory method. Investigations in that field are of important practical application: - Recommendations on determination of specific volume electric resistance of dielectric liquids  are proposed. Seven kinds of emulsions and fifteen types of suspensions are tested according to these methods in our laboratory by the order of Research Institute of Industrial Safety Measures in Chemistry. The exact determination of  gives opportunity to forecast the danger level of electrization of high-resistive liquids. - Investigations of kinetic characteristics of fluorocarbon liquids are made for the Research Institute Electropribor orders. Methods of determination of charge carrier mobility in fluocarbon liquids are proposed. - Automatized experimental computer-based set and its software for investigation of kinetic characteristics of dielectric liquids in wide range of voltage, interelectrode distances and time are designed. - Experimental set for measurements of specific dielectric permeability and liquid density for investigations of polarization and dipole moments of molecules by second Debye method and investigation of frequency dependence of angle tangent of dielectric losses computer-based is designed with the use of the tester of dielectric permeability and liquid density H2-8, also alternating current bridge. - Research of electric methods of purification and control of the purity level of weakly conductive liquids and oils.

Publications

1. Karasev G. “Utilisation de la méthode des courants inversés pour la détermination des paramètres des diélectriques liquides” / B. Dikarev, G. Karasev, S. Sokolovskyy, A. Karasev. / Langes, Science et pratiques, Actes du 2ème Colloque internatonal francofone en Ukraine 3-4 octobre, Dnipro, 2018. – p. 51 – 52.

2. Karasev G. G. On the numerical analysis of experimental data on the buckling of conical shells / A. G. Karasev, M. A. Varyanichko, G. G. Karasev // Materials IV-th International scientific-technical conference: Computer modeling and optimization of complex systems (КМОСС-2018) (м. Дніпро, 1-2 листопада 2018 року) / Міністерство освіти і науки України, Державний вищий навчальний заклад «Український державний хіміко-технологічний університет». – Дніпро: Баланс-клуб, 2018. – с. 21 – 24.

3. G.Karasev “Utilisatson du methode des courants inverse pour la determination des parametres des dielectriquers liquides”. B. Dikarev, G. Karasev, S. Sokolovsky, А. Karasev. Actes du 2et Colloque international francophone en Ukraine 19-20 octobre, 34-36, 2018. Kiev.

4. Карасьов Г.Г. Методичні вказівки до вивчення лабораторної роботи «Дослідження замкнутого циклу політропних процесів організованого в обмеженому об’ємі повітря незмінної маси» з дисципліни «Фізика» розділ «Молекулярна фізика та термодинаміка » для студентів ступеня бакалавра всіх спеціальностей денної форми навчання / Укладачі: Цуканов О. А., Дікарев Б. М., Карасьов Г. Г. – Дніпро: ДВНЗ ПДАБА, 2018. – 18 с.

5. Genadii Karasev Space charge effect on the electrophysical characteristics of liquid dielectrics / Borys Dikarev, Genadii Karasev, Serhii Sokolovsky, Olexii Karasev // 20th IEEE International Conference on Dielectric liquids in Roma, Italy, June 23rd – 27th, 2019, p.1-4, DOI: https://doi.org/10.1109/ICDL.2019.8796821

6. Gennady Karasev On the numerical analysis of experimental data of the buckling of closed elastic shallow conical shells undergoing external pressure / Marina Varyanichko, Gennady Karasev, Makhinko Mykola, Olena Butska // Proceedings of the XIII International Scientific and Practical Conference International Trends in Science and Technology / Vol.1, May 31, 2019, Warsaw, Poland. – p. 18 – 22.

7. Karasev H. Ensuring the sustainability of the motorway subgrade in the zones of underground mining operations / Balashova, Y., Demianenko, V., Tkach, N., Karasev, H. // E3S Web of Conferences, Volume 123, 2019 Ukrainian School of Mining Engineering, 12 p. DOI: 10.1051/e3sconf/201912301041

8. Gennady Karasev. Numerical analysis of experimental research on buckling of closed shallow conical shells under external pressure / Alexey Karasev, Maryna Varianychko, Yaroslav Bessmertnyi, Vasily Krasovsky, Gennady Karasev // Journal of Theoretical and Applied Mechanics, 58, 1, pp. 117-126, Warsaw 2020. DOI: https://doi.org/10.15632/jtam-pl/115321

9. Karasev Gennady. Analysis of hydrogen production conditions / Karasev Gennady, Volnianska Iryna, Varianychko Maryna, Karasev Alexey // The scientific heritage, VOL 2, No 86, pp. 34-38, Budapest, Hungary 2022. DOI:

10. Karasev Gennady. Installation for studying transient currents in dielectric liquids / Karasev Gennady, Volnianska Iryna, Makarov Vladimir, Karasev Alexey // World Science, World Science, 1(73), pp. 21-24, Warsaw, Poland, 2022. DOI: https://doi.org/10.31435/rsglobal_ws/30012022/7752