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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">probener</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ</journal-title><trans-title-group xml:lang="en"><trans-title>Power engineering: research, equipment, technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-9903</issn><issn pub-type="epub">2658-5456</issn><publisher><publisher-name>Kazan State Power Engineering  University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30724/1998-9903-2024-26-3-156-172</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-3090</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>ТЕОРЕТИЧЕСКАЯ И ПРИКЛАДНАЯ ТЕПЛОТЕХНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORETICAL AND APPLIED HEAT ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Экспериментальная оценка структуры потока в вертикальном коническом диффузоре при разных способах подачи воздуха</article-title><trans-title-group xml:lang="en"><trans-title>Experimental evaluation of the flow structure in a vertical conical diffuser with different air supply methods</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>Плотников</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Plotnikov</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Плотников Леонид Валерьевич – д-р техн. наук, профессор кафедры «Турбины и двигатели»</p><p>г. Екатеринбург</p></bio><bio xml:lang="en"><p>Leonid V. Plotnikov</p><p>Ekaterinburg</p></bio><email xlink:type="simple">leonplot@mail.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>Рыжков</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryzhkov</surname><given-names>A. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рыжков Александр Филиппович – д-р техн. наук, профессор кафедры «Тепловые электрические станции»</p><p>г. Екатеринбург</p></bio><bio xml:lang="en"><p>Alexander F. Ryzhkov</p><p>Ekaterinburg</p></bio><email xlink:type="simple">af.ryzhkov@mail.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>Красильников</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Krasilnikov</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Красильников Дмитрий Николаевич – студент кафедры «Турбины и двигатели»</p><p>г. Екатеринбург</p></bio><bio xml:lang="en"><p>Dmitry N. Krasilnikov</p><p>Ekaterinburg</p></bio><email xlink:type="simple">dima_krasilnikov_2017@mail.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>Давыдов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Davydov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Давыдов Данил Алексеевич – студент кафедры «Турбины и двигатели»</p><p>г. Екатеринбург</p></bio><bio xml:lang="en"><p>Danil A. Davydov</p><p>Ekaterinburg</p></bio><email xlink:type="simple">dda_2003@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4481-3607</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шурупов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shurupov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шурупов Владислав Александрович – студент кафедры «Турбины и двигатели»</p><p>г. Екатеринбург</p></bio><bio xml:lang="en"><p>Vladislav A. Shurupov</p><p>Ekaterinburg</p></bio><email xlink:type="simple">shurupov.vladislav@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский федеральный университет имени первого Президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University named after the first President of Russia B.N. Yeltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>11</day><month>09</month><year>2024</year></pub-date><volume>26</volume><issue>3</issue><fpage>156</fpage><lpage>172</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Плотников Л.В., Рыжков А.Ф., Красильников Д.Н., Давыдов Д.А., Шурупов В.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Плотников Л.В., Рыжков А.Ф., Красильников Д.Н., Давыдов Д.А., Шурупов В.А.</copyright-holder><copyright-holder xml:lang="en">Plotnikov L.V., Ryzhkov A.F., Krasilnikov D.N., Davydov D.A., Shurupov V.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://www.energyret.ru/jour/article/view/3090">https://www.energyret.ru/jour/article/view/3090</self-uri><abstract><p>АКТУАЛЬНОСТЬ исследования определяется тем, что вертикальные конические диффузоры используются в качестве вспомогательных аппаратов во многих технических приложениях в различных отраслях (химическая промышленность, энергетическое машиностроение, технологические устройства и т.д.).</p><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Оценить влияние способа (конструкции) подвода воздуха, формы поперечного сечения подводящих каналов и сопловых трубок на газодинамическую структуру потока в вертикальном диффузоре для разных расходных характеристик.</p></sec><sec><title>МЕТОДЫ</title><p>МЕТОДЫ. Структура (распределение) потока внутри вертикального диффузора при подаче воздуха с помощью разных конструкций подводящих каналов изучалось на экспериментальном стенде. На основе метода тепловизуализирующей съемки изучалась структура потока в вертикальном диффузоре. В данном исследовании изучалось два способа подвода воздуха в вертикальный диффузор: подвод воздуха через один прямолинейный канал снизу и сопловая подача воздуха через четыре трубки. Каналы и сопла имели поперечные сечения в форме круга, квадрата и треугольника. Соответственно, было изучено влияние шести конструкций подвода воздуха в вертикальный диффузор и их влияние на газодинамическую структуру течения.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Опыты проводились при стационарном режиме течения воздуха в диффузоре для расходов воздуха от 0,015 до 0,06 м3/с. Число Рейнольдса для потока воздуха на выходе из подводящего канала находилось в диапазоне от 42500 до 150000. Получены термограммы структуры потока в вертикальном диффузоре при разных способах подачи воздуха для разных расходных характеристик.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. Особенности структуры потока в вертикальном диффузоре при традиционном подводе воздуха снизу через один канал заключаются в формировании ярко выраженного центрального течения воздуха вдоль вертикальной оси диффузора при использование всех конфигураций канала. При этом форма поперечного сечения подводящего канала оказывает существенное влияние на структуру потока в коническом диффузоре. Особенности структуры потока в вертикальном диффузоре при сопловой подаче воздуха через четыре трубки заключаются в отсутствии застойных зон и центральном течении воздуха вдоль оси. При этом использование квадратной и треугольной сопловых трубок приводит к более равномерному распределению потока воздуха по всему объему вертикального диффузора.</p></sec></abstract><trans-abstract xml:lang="en"><p>RELEVANCE of the study is determined by the fact that vertical conical diffusers are used as auxiliary devices in many technical applications in various industries (chemical industry, power engineering, technological devices, etc.).</p><sec><title>THE PURPOSE</title><p>THE PURPOSE. The influence of the method (design) of air supply, the cross-sectional shape of the supply channels and nozzle tubes on the gas-dynamic structure of the flow in a vertical diffuser for different flow characteristics was assessed.</p></sec><sec><title>METHODS</title><p>METHODS. The structure (distribution) of the flow inside a vertical diffuser for supplying air using different designs of supply channels was studied on an experimental bench. Based on the thermal imaging method, the flow structure in a vertical diffuser was studied. In this study, two methods of supplying air to a vertical diffuser were studied: supplying air through one straight channel from the bottom and nozzle supplying air through four tubes. The channels and nozzles had cross sections in the shape of a circle, square and triangle. Accordingly, the influence of six air supply designs into a vertical diffuser and their influence on the gas-dynamic flow structure were studied.</p></sec><sec><title>RESULTS</title><p>RESULTS. The experiments were carried out under stationary air flow conditions in the diffuser for air flow rates from 0.015 to 0.06 m3/s. The Reynolds number for the air flow at the outlet of the supply channel was in the range from 42500 to 150000. Thermograms of the flow structure in a vertical diffuser were obtained for different methods of air supply for different flow characteristics.</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION. Features of the flow structure in a vertical diffuser with traditional air supply from below through one channel consist in the formation of a pronounced central air flow along the vertical axis of the diffuser when using all channel configurations. In this case, the cross-sectional shape of the supply channel has a significant impact on the flow structure in the conical diffuser. Features of the flow structure in a vertical diffuser with nozzle air supply through four tubes are the absence of stagnant zones and a central air flow along the axis. At the same time, the use of square and triangular nozzle tubes leads to a more uniform distribution of air flow throughout the entire volume of the vertical diffuser.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>вертикальный диффузор</kwd><kwd>газодинамическая структура потока</kwd><kwd>способ подачи воздуха</kwd><kwd>профилированные каналы</kwd><kwd>эксперимент</kwd><kwd>тепловизионная диагностика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>vertical diffuser</kwd><kwd>gas-dynamic flow structure</kwd><kwd>air supply method</kwd><kwd>profiled channels</kwd><kwd>experiment</kwd><kwd>thermal imaging diagnostics</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке Министерства науки и высшего образования Российской Федерации в рамках Программы развития Уральского федерального университета имени первого Президента России Б.Н. Ельцина в соответствии с программой стратегического академического лидерства «Приоритет-2030».</funding-statement><funding-statement xml:lang="en">The research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) is gratefully acknowledged.</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">Azad R.S. Turbulent flow in a conical diffuser: A review // Experimental Thermal and Fluid Science. 1996. Vol. 13(4). P. 318-337.</mixed-citation><mixed-citation xml:lang="en">Azad R.S. Turbulent flow in a conical diffuser: A review. Experimental Thermal and Fluid Science. 1996; 13(4):318-337.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Ferrari A. 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