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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 pub-id-type="doi">10.29235/1561-8358-2024-69-4-297-306</article-id><article-id custom-type="elpub" pub-id-type="custom">vestift-865</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>ЭНЕРГЕТИКА, ТЕПЛО- И МАССООБМЕН</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER ENGINEERING, HEAT AND MASS TRANSFER</subject></subj-group></article-categories><title-group><article-title>Интенсификация теплообмена в воздушном канале продольными вихрями</article-title><trans-title-group xml:lang="en"><trans-title>Heat transfer enhancement in air channel by longitudinal vortexes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6674-203X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жданов</surname><given-names>В. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhdanov</surname><given-names>V. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жданов Валерий Львович – доктор технических наук, ведущий научный сотрудник </p><p>ул. П. Бровки, 15, 220072, Минск</p></bio><bio xml:lang="en"><p>Valery L. Zhdanov – Dr. Sci. (Engineering), Leading Researcher </p><p>15, P. Brovka Str., 220072, Minsk</p></bio><email xlink:type="simple">valery.zhdanov@hmti.ac.by</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>Пустоход</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pustohod</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пустоход Егор Александрович – младший научный сотрудник</p><p>ул. П. Бровки, 15, 220072, Минск</p></bio><bio xml:lang="en"><p>Egor A. Pustohod – Junior Researcher</p><p>15, P. Brovka Str., 220072, Minsk</p></bio><email xlink:type="simple">pustokhod@hmti.ac.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4716-6123</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чорный</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Chorny</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чорный Андрей Дмитриевич – кандидат физико-математических наук, заведующий лабораторией </p><p>ул. П. Бровки, 15, 220072, Минск</p></bio><bio xml:lang="en"><p>Andrei D. Chorny – Cand. Sci. (Physics and Mathematics), Head of the Laboratory</p><p>15, P. Brovka Str., 220072, Minsk</p></bio><email xlink:type="simple">anchor@hmti.ac.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт тепло- и массообмена имени А. В. Лыкова НАН Беларуси</institution></aff><aff xml:lang="en"><institution>A. V. Luikov Heat and Mass Transfer Institute of the National Academy of Science of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>09</day><month>01</month><year>2025</year></pub-date><volume>69</volume><issue>4</issue><fpage>297</fpage><lpage>306</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Жданов В.Л., Пустоход Е.А., Чорный А.Д., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Жданов В.Л., Пустоход Е.А., Чорный А.Д.</copyright-holder><copyright-holder xml:lang="en">Zhdanov V.L., Pustohod E.A., Chorny A.D.</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/865">https://vestift.belnauka.by/jour/article/view/865</self-uri><abstract><p>Представлены результаты численного моделирования интенсификации теплообмена в канале прямоугольного сечения (0,005 × 0,031) м длиной 0,175 м. Нижняя поверхность канала равномерно нагревается до 343 К, а ее охлаждение осуществляется воздушным потоком при двух значениях расхода Q = 0,0010044 и 0,00209 м3/c и температуре 293 К. Интенсификация теплообмена совершается вихревыми генераторами (ВГ), расположенными на нагреваемой и противоположной ей поверхностях канала. Вихревые генераторы состоят из двух прямоугольных пластин (высота пластин h = 0,002 м, длина l = 0,015 м), установленных по нормали к поверхности и под углом атаки α = 15° к потоку. Нижние ВГ генерируют пары продольных вихрей, которые формируют за пластинами общие потоки, направленные к нагретой стенке, а верхние пары вихрей генерируют общие потоки, направленные от стенки к центру канала. Взаимодействие продольных вихрей и создаваемых ими вторичных потоков с основным потоком усиливает смешение внутри канала и теплообмен с поверхностями. Исследование выполнено методом RANS в интервале чисел Рейнольдса 1200–2600, рассчитанных по высоте вихревого генератора и скорости потока на входе в канал. Показано, что тепловая мощность канала с вихревыми генераторами на нижней поверхности увеличивается по сравнению с аналогичной в канале с гладкими стенками на 17–23 % соответственно указанным расходам. При расположении ВГ на нижней и верхней поверхностях тепловая мощность возрастает на 27–32 %. Метод может найти практическое применение при разработке конструкций теплообменников для охлаждения малоразмерных источников тепловыделения или для обеспечения теплообмена в труднодоступных областях.</p></abstract><trans-abstract xml:lang="en"><p>Numerical investigation of heat transfer is carried out in an air channel of the rectangular cross section (0.005 × 0.031) m with the length of 0.175 m. The lower surface of the channel is uniformly heated up to 343 K, and the air flow temperature at the channel entrance is 293 K. Two flow rates Q = 0.0010044 and 0.00209 m3/s are considered. The heat transfer between the channel surfaces and the cooling air flow enhances by vortex generators (VG) placed at a heated and an opposite surfaces. These generators are formed by two rectangular plates arranged vertically on the surface and at an angle of attack α = 15° to the flow. The plate height is h = 0.002 m and its length is 0.015 m. The VGs at the heated surface creates a pair of longitudinal vortexes that generates behind the plates a common flow to the surface while a pair of longitudinal vortexes at the upper surface creates the common flow away from it. Interaction of longitudinal vortices and secondary flows created by them with the main flow enhances mixing inside the channel and heat exchange with surfaces. Investigation was carried out by the RANS method at Re = 1300–2600 based on the VG height and the flow velocity at the channel entrance. It is shown that the thermal power of the channel with VG at the lower surface increases relative to that in the smooth walls channel by 17–23 % for the considered flow rates. If VG are placed at the both surfaces, the channel thermal power increases by 27–32 % depending on the flow rate.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>воздушный канал</kwd><kwd>вихревые генераторы</kwd><kwd>тепловой поток</kwd><kwd>продольные вихри</kwd></kwd-group><kwd-group xml:lang="en"><kwd>air channel</kwd><kwd>vortex generators</kwd><kwd>heat flow</kwd><kwd>longitudinal vortices</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">Pearcy, H. H. Introduction to Shock-Induced separation and its prevention by design and boundary Layer control / H. H. Pearcy // Boundary Layer and Flow Control: Its Principle and Applications / ed. G. V. 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