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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">avroen</journal-id><journal-title-group><journal-title xml:lang="ru">Омский научный вестник. Серия "Авиационно-ракетное и энергетическое машиностроение"</journal-title><trans-title-group xml:lang="en"><trans-title>Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2588-0373</issn><issn pub-type="epub">2587-764X</issn><publisher><publisher-name>Омский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25206/2588-0373-2026-10-1-13-21</article-id><article-id custom-type="edn" pub-id-type="custom">OZHBQW</article-id><article-id custom-type="elpub" pub-id-type="custom">avroen-146</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>ЭНЕРГЕТИЧЕСКОЕ И ХИМИЧЕСКОЕ МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER AND CHEMICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Оценка теплогидравлической эффективности прямоугольных риблет на внутренней поверхности трубы</article-title><trans-title-group xml:lang="en"><trans-title>Numerical evaluation of the thermal-hydraulic performance of rectangular riblets in a tube</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9416-7749</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зайдес</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaides</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ЗАЙДЕС Семен Азикович, доктор технических наук, профессор (Россия), профессор кафедры «Материаловедение, сварочные и аддитивные технологии»</p><p>AuthorID (РИНЦ): 324067</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>ZAIDES Semen Azikovich, Doctor of Technical Sciences, Professor, Professor of the Materials Science, Welding and Additive Technologies Department</p><p>AuthorID (RSCI): 324067</p><p>Lermontov St., 83, Irkutsk, 664074</p></bio><email xlink:type="simple">zsa@ex.istu.edu</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-5189-2884</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чан</surname><given-names>Туан Зунг</given-names></name><name name-style="western" xml:lang="en"><surname>Tran</surname><given-names>Tuan Dung</given-names></name></name-alternatives><bio xml:lang="ru"><p>ЧАН Туан Зунг, аспирант кафедры «Материаловедение, сварочные и аддитивные технологии»</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>TRAN Tuan Dung, Postgraduate of the Materials Science, Welding and Additive Technologies Department</p><p>Lermontov St., 83, Irkutsk, 664074</p></bio><email xlink:type="simple">trantuandung98@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Иркутский национальный исследовательский технический университет<country>Россия</country></aff><aff xml:lang="en">Irkutsk National Research Technical University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>31</day><month>03</month><year>2026</year></pub-date><volume>10</volume><issue>1</issue><fpage>13</fpage><lpage>21</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Зайдес С.А., Чан Т., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Зайдес С.А., Чан Т.</copyright-holder><copyright-holder xml:lang="en">Zaides S.A., Tran T.</copyright-holder><license 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://ariem.omgtu.ru/jour/article/view/146">https://ariem.omgtu.ru/jour/article/view/146</self-uri><abstract><p>Целью данной работы является исследование возможности интенсификации теплообмена и снижения гидравлических потерь в трубопроводных системах за счет использования структурированных поверхностей.В статье выполнена оценка теплогидравлической эффективности прямоугольных риблет высотой h = 1 мм и отношениям высоты к ширине h/t = 1,1 по сравнению с гладкой поверхностью и поверхностями с эквивалентными песочными шероховатостями (высотой 0,2; 0,3; 0,4 и 0,5 мм), в условиях полностью развитого турбулентного течения при числе Рейнольдса Re = 20 000. Исследование проведено на основе результатов CFD-моделирования в Ansys Fluent 19.1 R1 с использованием периодических граничных условий.Результаты показывают, что, в отличие от других видов поверхностей, исследуемая поверхность с прямоугольными риблетами демонстрирует высокую теплогидравлическую эффективность среди всех рассмотренных форм поверхности труб (на 86 % выше по сравнению с гладкой поверхностью). Полученные данные указывают на высокий потенциал широкого применения риблет в теплогидравлических системах.</p></abstract><trans-abstract xml:lang="en"><p>The aim of the research is to explore the potential for enhancing heat transfer and reducing hydraulic losses in piping systems by employing structured surfaces.An evaluation of the thermal-hydraulic performance of rectangular riblets with a height of h = 1 mm and a height-to-width ratio of h/t = 1.1 is performed in comparison with a smooth surface and surfaces with equivalent sand-grain roughness (heights of 0.2; 0.3; 0.4; and 0.5 mm) under fully developed turbulent flow conditions at a Reynolds number of Re = 20 000. The authors conduct the research basing on CFD simulation results by the Ansys Fluent 19.1 R1 with periodic boundary conditions.The results show that, unlike other surface types, the investigated surface with rectangular riblets demonstrates high thermal-hydraulic efficiency among all considered pipe surface forms (86 % higher compared to the smooth surface). Therefore, the research clearly demonstrates the high potential for the widespread application of riblets in thermal-hydraulic systems.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>риблеты</kwd><kwd>шероховатая поверхность</kwd><kwd>число Рейнольдса</kwd><kwd>теплогидравлическая эффективность</kwd><kwd>гидравлическое сопротивление</kwd><kwd>периодические граничные условия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>riblets</kwd><kwd>rough surface</kwd><kwd>Reynolds number</kwd><kwd>thermal-hydraulic performance</kwd><kwd>hydraulic resistance</kwd><kwd>periodic boundary conditions</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">Митрофанова О. В. Гидродинамика и теплообмен в закрученных потоках в каналах ядерных энергетических установок: монография. Москва: Физматлит, 2010. 286 с. ISBN 978-5-9221-1223-9.</mixed-citation><mixed-citation xml:lang="en">Mitrofanova O. 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