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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">techusgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета. Серия: Техника и технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University. Series: Engineering and Technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1528</issn><publisher><publisher-name>Юго-Западный государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">techusgu-119</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Динамика немагнитных жидких и газообразных включений  в магнитной жидкости в магнитном поле кольцевого магнита</article-title><trans-title-group xml:lang="en"><trans-title>Dynamics of Nonmagnetic Liquid and Gaseous Inclusions  in a magnetic Fluidin the Magnetic Field of a Ring Magnet</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7712-0682</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ряполов</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryapolov</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ряполов Петр Алексеевич, кандидат физикоматематических наук, доцент, декан естественно-научного факультета</p><p>ул. 50 лет Октября, 94, г. Курск, 305040</p></bio><bio xml:lang="en"><p>Petr A. Ryapolov, Сand. of Sci. (Physics and Mathematics), Associate Professor, Dean of the Faculty of Science</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">r-piter@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколов</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolov</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соколов Евгений Александрович, аспирант кафедры нанотехнологий, общей и прикладной физики</p><p>ул. 50 лет Октября, 94, г. Курск, 305040</p></bio><bio xml:lang="en"><p>Evgeny A. Sokolov, Post-Graduate Student  of the Department of Nanotechnology,  General and Applied Physics</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">evgeniysokolov1@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Юго-Западный государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southwest State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>02</day><month>05</month><year>2023</year></pub-date><volume>11</volume><issue>1</issue><fpage>105</fpage><lpage>116</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ряполов П.А., Соколов Е.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Ряполов П.А., Соколов Е.А.</copyright-holder><copyright-holder xml:lang="en">Ryapolov P.A., Sokolov E.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://techusgu.elpub.ru/jour/article/view/119">https://techusgu.elpub.ru/jour/article/view/119</self-uri><abstract><sec><title>Цель</title><p>Цель. Изучить динамику немагнитных газовых пузырьков и капель в магнитной жидкости в неоднородном магнитном поле. </p></sec><sec><title>Методы</title><p>Методы. Эксперименты проведены на установках, разработанных на основе известных методов и оборудования для магнитных измерений и изготовленных самостоятельно. В качестве измерительных систем использованы современные цифровые скоростные системы видеофиксации изображения с высоким разрешением. Исследуются образцы магнетитовой магнитной жидкости с олеиновой кислотой в роли ПАВ и керосином в качестве жидкости-носителя.</p></sec><sec><title>Результаты</title><p>Результаты. Экспериментально рассмотрено два варианта исследования левитирующего немагнитного объема в магнитной жидкости: при бесконтактном манипулировании в измерительной ячейке с магнитной жидкостью с помощью неоднородного магнитного поля, создаваемого кольцевым постоянным магнитом, в результате чего от него отделялись и всплывали немагнитные капли или газовые пузырьки, а также при инжекции немагнитной фазы шприцевым насосом через капилляр, конец которого располагался в «области магнитного вакуума» неоднородного магнитного поля. </p></sec><sec><title>Заключение</title><p>Заключение. В рамках теоретической интерпретации показано, что определяющую роль в формировании левитирующего немагнитного объема играют конфигурация неоднородного магнитного поля и свойства магнитожидкостной системы. Экспериментально продемонстрировано, что размеры немагнитных включений, всплывающих в магнитожидкостной системе в неоднородном магнитном поле, не зависят от расхода и гидростатического давления, при этом возможно управление размерами немагнитных жидких и газообразных включений с помощью изменения параметров магнитных жидкостей и магнитного поля, что может найти применение в качестве микродозаторов или газовых счетчиков в микрофлюидных системах. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose</title><p>Purpose. The aim of the work is to study the dynamics of non-magnetic gas bubbles and droplets in a magnetic liquid in an inhomogeneous magnetic field </p></sec><sec><title>Methods</title><p>Methods. The experiments were carried out on installations developed on the basis of known methods and equipment for magnetic measurements and manufactured independently). Modern digital high-speed video recording systems with high resolution are used as measuring systems. Samples of magnetite magnetic fluid, oleic acid as a surfactant, and kerosene as a carrier fluid are studied. </p></sec><sec><title>Results</title><p>Results. Two options for studying a levitating nonmagnetic volume in a magnetic fluid are experimentally considered: with contactless manipulation in a measuring cell with a magnetic fluid using an inhomogeneous magnetic field created by an annular permanent magnet, as a result of which nonmagnetic drops or gas bubbles separated from it and floated up, as well as during injection non-magnetic phase with a syringe pump through a capillary, the end of which was located in the "magnetic vacuum region" of a non-uniform magnetic field. </p></sec><sec><title>Conclusion</title><p>Conclusion. Within the framework of the theoretical interpretation, it is shown that the configuration of the inhomogeneous magnetic field and the properties of the magnetofluid system play a decisive role in the formation of a levitating nonmagnetic volume. It has been experimentally demonstrated that the sizes of non-magnetic inclusions floating up in a magnetic-fluid system in an inhomogeneous magnetic field do not depend on the flow rate and hydrostatic pressure, while it is possible to control the size of non-magnetic liquid and gaseous inclusions by changing the parameters of magnetic fluids and the magnetic field, which can be used in as micro-batchers or gas meters in microfluidic systems. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>магнитная жидкость</kwd><kwd>немагнитные включения</kwd><kwd>динамика</kwd><kwd>пузырьки</kwd><kwd>капли</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magneticfluid</kwd><kwd>non-magneticinclusions</kwd><kwd>dynamics</kwd><kwd>bubbles</kwd><kwd>drops</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Публикация подготовлена в рамках выполнения государственного задания на 2020 г. (номер 0851-2020-0035).</funding-statement><funding-statement xml:lang="en">The publication was preparedaspart of the statet askfor 2020. (number 0851-2020-0035)</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Visual observation of the effect of magnetic field on moving air and vapor bubbles in a magnetic fluid / K. Nakatsuka, B. Jeyadevan, Y. Akagami, T. Torigoea, S. Asari // Journal of Magnetism and Magnetic Materials. 1999. Vol. 201, No. 1-3. P. 256–259.</mixed-citation><mixed-citation xml:lang="en">Nakatsuka K., Jeyadevan B., Akagami Y., Torigoea T., Asari S. Visual observation of the effect of magnetic field on moving air and vapor bubbles in a magnetic fluid. 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