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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">10.30724/1998-9903-2023-25-2-187-200</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-2625</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>Физическое моделирование аэродинамических характеристик потока в вертикальном диффузоре при подаче воздуха через разные конфигурации трубок</article-title><trans-title-group xml:lang="en"><trans-title>Physical simulation of aerodynamic flow characteristics in a vertical diffuser with air supply through different pipe configurations</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4481-3607</contrib-id><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>Леонид Валерьевич Плотников, д-р техн. наук, профессор</p><p>кафедра «Турбины и двигатели»</p><p>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>Александр Филиппович Рыжков, д-р техн. наук, профессор</p><p>кафедра «Тепловые электрические станции»</p><p>Екатеринбург</p></bio><bio xml:lang="en"><p>Alexander F. Ryzhkov</p><p>Ekaterinburg</p></bio><email xlink:type="simple">af.rvzhkov@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>Медведев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Medvedev</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерий Андреевич Медведев, бакалавр</p><p>Екатеринбург</p></bio><bio xml:lang="en"><p>Valery A. Medvedev</p><p>Ekaterinburg</p></bio><email xlink:type="simple">warhammer_valera@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>Смирных</surname><given-names>М. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnykh</surname><given-names>M. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Дмитриевич Смирных, бакалавр</p><p>Екатеринбург</p></bio><bio xml:lang="en"><p>Mikhail D. Smirnykh</p><p>Ekaterinburg</p></bio><email xlink:type="simple">mihail300401@gmail.com</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>Осипов</surname><given-names>Л. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Osipov</surname><given-names>L. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Леонид Евгеньевич Осипов, аспирант</p><p>кафедра «Турбины и двигатели»</p><p>Екатеринбург</p></bio><bio xml:lang="en"><p>Leonid E. Osipov</p><p>Ekaterinburg</p></bio><email xlink:type="simple">klumbaa@outlook.com</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>2023</year></pub-date><pub-date pub-type="epub"><day>09</day><month>06</month><year>2023</year></pub-date><volume>25</volume><issue>2</issue><fpage>187</fpage><lpage>200</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Плотников Л.В., Рыжков А.Ф., Медведев В.А., Смирных М.Д., Осипов Л.Е., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Плотников Л.В., Рыжков А.Ф., Медведев В.А., Смирных М.Д., Осипов Л.Е.</copyright-holder><copyright-holder xml:lang="en">Plotnikov L.V., Ryzhkov A.F., Medvedev V.A., Smirnykh M.D., Osipov L.E.</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/2625">https://www.energyret.ru/jour/article/view/2625</self-uri><abstract><sec><title>   АКТУАЛЬНОСТЬ</title><p>   АКТУАЛЬНОСТЬ. Вертикальные конические диффузоры применяются в различных технических приложениях: теплообменные аппараты, газоочистные агрегаты, котлы, промышленные печи, сушильные установки, вентиляционные устройства, системы форсунок и другие. Для их эффективной эксплуатации необходимо обеспечивать равномерный подвод рабочей среды в устройство, что определяется особенностями течения вдиффузоре. Таким образом, изучение аэродинамики технологических устройств с коническими диффузорами являетсяактуальной задачей для газодинамического совершенствования и поиска способов управления характеристиками потоков.</p></sec><sec><title>   ЦЕЛЬ</title><p>   ЦЕЛЬ. На основе экспериментальных данных о мгновенных значениях скорости потока воздуха установить эволюцию поля скоростей по высоте цилиндрической части диффузора для разных конфигураций подающихтрубок, а также определить величину изменения интенсивности турбулентности по высоте диффузора при разных начальных условиях.</p></sec><sec><title>   МЕТОДЫ</title><p>   МЕТОДЫ. Измерение мгновенных значений скорости потока воздуха осуществляется с помощью термоанемометра постоянной температуры. В статье получены данные о полях скоростей и интенсивности турбулентности по высоте и вдоль диаметра цилиндрической части диффузора при подаче воздуха через трубки разных конфигураций. Использовались подающие трубки с поперечными сечениями в форме круга, квадрата и равностороннего треугольника.</p></sec><sec><title>   РЕЗУЛЬТАТЫ</title><p>   РЕЗУЛЬТАТЫ. В статье дано подробное описание экспериментального стенда (включая ключевые геометрические размеры), приборно-измерительной системы и методики обработки данных. Представлены диапазоны изменения начальных условий для проведения опытов. Производится сравнение аэромеханических характеристик потоков в вертикальном диффузоре при подаче воздуха через разные конфигурации трубок.</p></sec><sec><title>   ЗАКЛЮЧЕНИЕ</title><p>   ЗАКЛЮЧЕНИЕ. Показано, что в диффузоре имеет место падение средней скорости вверх по течению, что характерно для всех конфигураций подающих трубок. Установлено, что профилированные трубки оказывают влияние на форму поля скоростей. Выявлено, что значения интенсивности турбулентности изменяются от 0,05 до 0,39 (наибольшие значения характерны при подаче воздуха через профилированные трубки). Показано, что интенсивность турбулентности имеет максимальные значения на высоте 300-350 мм, что характерно для всех исследуемых конфигураций трубок.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   RELEVANCE</title><p>   RELEVANCE. Vertical cone diffusers are used in various technical applications: heat exchangers, gas cleaning units, boilers, industrial furnaces, dryers, ventilation devices, nozzle systems and others. For their efficient operation, it is necessary to ensure a uniform supply of the working medium to the device, which is determined by the characteristics of the flow in thediffuser. Thus, the study of the aerodynamics of technological devices with conical diffusers is an urgent task for gas-dynamic improvement and the search for ways to control flow characteristics.</p></sec><sec><title>   THE PURPOSE</title><p>   THE PURPOSE. To establish the evolution of the velocity field along the height of the cylindrical part of the diffuser for different configurations of the supply tubes, and also to determine the magnitude of the change in the intensity of turbulence along the height of the diffuser under different initial conditions based on experimental data on the instantaneous values of the air flow velocity.</p></sec><sec><title>   METHODS</title><p>   METHODS. Measurement of instantaneous values of air flow velocity is carried out using a constant temperature hot-wire anemometer. The article provides data on velocity fields and turbulence intensity along the height and along the diameter of the cylindrical part of the diffuser when air is supplied through tubes of different configurations. Feed tubes with cross sections in the form of a circle, a square and an equilateral triangle were used.</p></sec><sec><title>   RESULTS</title><p>   RESULTS. The article provides a detailed description of the experimental stand (including key geometric dimensions), instrumentation and measurement system, and data processing techniques. The ranges of changes in the initial conditions for the experiments are presented. A comparison of the aeromechanical characteristics of flows in a vertical diffuser when air issupplied through different tube configurations is carried out. CONCLUSION. It is shown that in the diffuser there is a drop in the average velocity upstream, which is typical for all configurations of the supply tubes. It has been established that profiled tubes influence the shape of the velocity field. It was found that the values of turbulence intensity vary from 0.05 to 0.39 (the highest values were typical when air was supplied through profiled tubes). It is shown that the intensity of turbulence has its maximum values at a height of 300-350 mm, which is typical for all investigated tube configurations.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>вертикальный конический диффузор</kwd><kwd>аэродинамика</kwd><kwd>стационарный поток</kwd><kwd>профилированные трубки</kwd><kwd>поле скоростей</kwd><kwd>интенсивность турбулентности</kwd><kwd>эмпирические закономерности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>vertical cone diffuser</kwd><kwd>aerodynamics</kwd><kwd>stationary flow</kwd><kwd>profiled tubes</kwd><kwd>velocity field</kwd><kwd>turbulence intensity</kwd><kwd>empirical regularities</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">Japikse D., Baines N. C. Diffuser Design Technology. Norwich, VT: Concepts ETI, 1998. 524 p.</mixed-citation><mixed-citation xml:lang="en">Japikse D., Baines N. C. 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