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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</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">10.29235/1561-8323-2018-62-1-109-114</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-497</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>ТЕХНИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TECHNICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>ЧИСЛЕННЫЙ АНАЛИЗ ПРИСОЕДИНЕННОГО ТЕЧЕНИЯ ЗА РЕБРОМ</article-title><trans-title-group xml:lang="en"><trans-title>NUMERICAL ANALYSIS OF A REATTACHED FLOW BEHIND A RIB</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>Баранова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Baranova</surname><given-names>Tatiana A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>науч. сотрудник</p><p>ул. П. Бровки, 15, 220072, Минск</p></bio><bio xml:lang="en"><p>Researcher</p><p>15, P. Brovka Str., Minsk</p></bio><email xlink:type="simple">bartat@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>Жданов</surname><given-names>В. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhdanov</surname><given-names>Valery L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р техн. наук, вед. науч. сотрудник</p><p>ул. П. Бровки, 15, 220072, Минск</p></bio><bio xml:lang="en"><p>D. Sc. (Engineering), Leading researcher</p><p>15, P. Brovka Str., 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>Иванов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>Dmitrii A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.-мат. наук, ст. науч. сотрудник</p><p>ул. П. Бровки, 15, 220072, Минск</p></bio><bio xml:lang="en"><p>Ph. D. (Physics and Mathematics), Senior researcher</p><p>15, P. Brovka Str., Minsk</p></bio><email xlink:type="simple">divanov@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>Смульский</surname><given-names>Я. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Smulskii</surname><given-names>Yaroslav I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>вед. специалист</p><p>пр. Академика Лаврентьева, 2, 630090, Новосибирск</p></bio><bio xml:lang="en"><p>Leading specialist</p><p>2, Lavrentiev Ave., 630090, Novosibirsk</p></bio><email xlink:type="simple">smul@ngs.ru</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>Терехов</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Terekhov</surname><given-names>Viktor I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р техн. наук, профессор, заведующий отделом</p><p>пр. Академика Лаврентьева, 2, 630090, Новосибирск</p></bio><bio xml:lang="en"><p>D. Sc. (Engineering), Professor, Head of the Department</p><p>2, Lavrentiev Ave., 630090, Novosibirsk</p></bio><email xlink:type="simple">terekhov@itp.nsc.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт тепло- и массообмена им. А. В. Лыкова Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт теплофизики им. С. С. Кутателадзе Сибирского отделения Российской академии наук</institution></aff><aff xml:lang="en"><institution>Kutateladze S. S. Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>05</day><month>03</month><year>2018</year></pub-date><volume>62</volume><issue>1</issue><fpage>109</fpage><lpage>114</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Баранова Т.А., Жданов В.Л., Иванов Д.А., Смульский Я.И., Терехов В.И., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Баранова Т.А., Жданов В.Л., Иванов Д.А., Смульский Я.И., Терехов В.И.</copyright-holder><copyright-holder xml:lang="en">Baranova T.A., Zhdanov V.L., Ivanov D.A., Smulskii Y.I., Terekhov V.I.</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://doklady.belnauka.by/jour/article/view/497">https://doklady.belnauka.by/jour/article/view/497</self-uri><abstract><p>Турбулентные характеристики присоединенного течения срывающегося с ребра в плоском воздушном канале численно анализируются методами RANS (осредненные уравнения Рейнольдса) и LES (метод крупных вихрей). Оба метода показали формирование симметричных зон низкого давления в углах, образованных ребром со стенками канала. Эти зоны вызывали генерацию вихревой трубки вдоль длины ребра. Тем не менее, присоединенное течение было идентифицировано в RANS как двумерное с уменьшением скорости у нижней стенки канала. Метод крупных вихрей показал возникновение в отрывной зоне течений в поперечном и нормальном направлениях. Они приводили к изменению соотношений между компонентами скорости и напряжений Рейнольдса, а также к снижению скорости присоединенного течения у нижней стенки канала, т. е. к формированию трехмерного течения. </p></abstract><trans-abstract xml:lang="en"><p>Turbulent characteristics of a reattached flow separated from a rib in an air flat channel were numerically analyzed by RANS and LES methods. The both methods showed low pressure regions in corners formed by the rib and the channel walls that caused a vorticity tube to be formed along the rib. Nevertheless in RANS, a reattached flow was identified as two-dimensional with a velocity decreasing near the channel bottom wall. In LES, the low pressure regions caused transverse and normal motions in the separation region that resulted in redistributions between velocity components, Reynolds stresses and the velocity decrease near the channel bottom wall, i.e., the formation of three-dimensional reattached flow. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>возвратный турбулентный поток</kwd><kwd>ребро</kwd><kwd>LES</kwd><kwd>RANS</kwd><kwd>плоский канал</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reattached turbulent flow</kwd><kwd>rib</kwd><kwd>LES</kwd><kwd>RANS</kwd><kwd>flat channel</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was made within the framework of Grants Т16Р-005 (BFFR) and 16-58-00018 (RFFR).</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">Terekhov, V. I. 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