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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">vestift</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-технических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physical-technical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8358</issn><issn pub-type="epub">2524-244X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestift-311</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>МАШИНОСТРОЕНИЕ, МЕХАНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICAL ENGINEERING AND MECHANICS</subject></subj-group></article-categories><title-group><article-title>ДИФФУЗИЯ И МАГНИТОФОРЕЗ В НАНОДИСПЕРСНЫХ МАГНИТНЫХ ЖИДКОСТЯХ С ФАЗОВЫМ ПЕРЕХОДОМ</article-title><trans-title-group xml:lang="en"><trans-title>DIFFUSION AND MAGNETOPHORESIS IN NANODISPERSED MAGNETIC FLUIDS WITH PHASE TRANSITION</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баштовой</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Bashtovoi</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор, заведующий кафедрой ЮНЕСКО «Энергосбережение и возобновляемые источники энергии»</p></bio><bio xml:lang="en"><p>Dr. Sc. (Physics and Mathematics), Professor, Head of the UNESCO Chair “Energy conservation and renewable energies”</p></bio><email xlink:type="simple">bashv@rambler.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>Кужир</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzhir</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор наук, лектор</p></bio><bio xml:lang="en"><p>Ph. d., Lector</p></bio><email xlink:type="simple">pavel.kuzhir@unice.fr</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зубарев</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Zubarev</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор, главный научный сотрудник</p></bio><bio xml:lang="en"><p>Dr. Sc. (Physics and Mathematics), Professor, Principal Researcher</p></bio><email xlink:type="simple">A.J.Zubarev@urfu.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мороз</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Moroz</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ассистент кафедры ЮНЕСКО «Энергосбережение и возобновляемые источники энергии»</p></bio><bio xml:lang="en"><p>Assistant of the UNESCO Chair “Energy conservation and renewable energies”</p></bio><email xlink:type="simple">v_moroz_17@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Университет Ниццы-Софии Антиполис</institution></aff><aff xml:lang="en"><institution>University of Nice-Sophia Antipolis</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Уральский федеральный университет</institution></aff><aff xml:lang="en"><institution>Ural Federal University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>08</day><month>08</month><year>2017</year></pub-date><volume>0</volume><issue>2</issue><fpage>78</fpage><lpage>87</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Баштовой В.Г., Кужир П.П., Зубарев А.Ю., Мороз В.С., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Баштовой В.Г., Кужир П.П., Зубарев А.Ю., Мороз В.С.</copyright-holder><copyright-holder xml:lang="en">Bashtovoi V.G., Kuzhir P.P., Zubarev A.Y., Moroz V.S.</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://vestift.belnauka.by/jour/article/view/311">https://vestift.belnauka.by/jour/article/view/311</self-uri><abstract><p>В работе описаны процессы массопереноса в нанодисперсных магнитных суспензиях (магнитных жидкостях) в предположении существования частиц в них в виде двух фазовых состояний: газообразного и конденсированного, с границей фазового перехода между ними, определяемой известными условиями термодинамического равновесия. В газовой фазе распределение концентрации магнитных частиц подчиняется уравнению диффузии, а в конденсированной фазе предполагается постоянным. Процесс описывается безразмерным магнитным параметром, представляющим собой отношение магнитной энергии частицы к тепловой, а также параметром, характеризующим дипольное взаимодействие между частицами. На основании уравнений диффузии и равновесия фаз представлено аналитическое решение одномерной задачи о распределении концентрации частиц в магнитной жидкости в неоднородном магнитном поле. Показано, что при заданной средней концентрации частиц фазовый переход наблюдается при превышении магнитным параметром определенных значений, а область конденсированной фазы увеличивается с его ростом. При больших его значениях в рассмотренной задаче координата границы фазового перехода практически линейно зависит от средней концентрации частиц. </p></abstract><trans-abstract xml:lang="en"><p>A description of mass transfer processes in nanodispersed magnetic suspensions (magnetic fluids) is proposed under the assumption that assembly of magnetic particles in them can exist in the form of two phases: gaseous and condensed, and the phase transitions are determined by well-known thermodynamic conditions of phase equilibrium and depend on concentration of particles and magnetic field intensity. The distribution of concentration of magnetic particles in a gas phase conforms the diffusion equation, and in the condensed phase it is supposed to be constant. Process is described by the dimensionless magnetic parameter representing the relation of magnetic energy of a particle to thermal one, and also by the parameter characterizing dipole-dipole interaction between particles. The analytical solution to one-dimensional problem on distribution of concentration of particles in a magnetic fluid in locally non-uniform magnetic field is presented on the basis of the equations of diffusion and phase equilibrium. It is shown, that phase transition at given average concentration of particles is observed when the magnetic parameter exceeds certain value, and the area of the condensed phase increases with its increasing. At its large values the coordinate of phase transition boundary depends on average concentration of particles in the considered problem practically linearly.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>магнитная жидкость</kwd><kwd>диффузия</kwd><kwd>магнитофорез</kwd><kwd>фазовый переход</kwd><kwd>магнитное поле</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnetic fluid</kwd><kwd>diffusion</kwd><kwd>magnetophoresis</kwd><kwd>phase transition</kwd><kwd>magnetic field</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Rosensweig, R. E. Ferrohydrodynamics / R. E. Rosensweig. – N. Y.: Cambridge Univ. Press, 1985. – 344 p.</mixed-citation><mixed-citation xml:lang="en">Rosensweig R. E. Ferrohydrodynamics. N. 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