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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">nguphys</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский физический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>SIBERIAN JOURNAL OF PHYSICS</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9447</issn><publisher><publisher-name>Новосибирский государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25205/2541-9447-2024-19-2-95-110</article-id><article-id custom-type="elpub" pub-id-type="custom">nguphys-325</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>ФИЗИКА ЖИДКОСТИ, НЕЙТРАЛЬНЫХ И ИОНИЗОВАННЫХ ГАЗОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS OF A FLUID, NEUTRAL AND IONIZED GASES</subject></subj-group></article-categories><title-group><article-title>Экспериментальное исследование развития волнового поезда в продольном следе в пограничном слое плоской пластины при числе Маха 2,5</article-title><trans-title-group xml:lang="en"><trans-title>Experimental Study of the Wave Train Development in a Longitudinal Trace in the Fat Plate Boundary Layer at Mach 2.5</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>Питеримова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Piterimova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Питеримова Марина Валадимировна, младший научный сотрудник</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Marina V. Piterimova, Junior Researcher</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Косинов</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kosinov</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Косинов Александр Дмитриевич, доктор физико-математических наук</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Alexander D. Kosinov, Doctor of Physical and Mathematical Sciences</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Семёнов</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Semionov</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Семёнов Николай Васильевич, доктор физико-математических наук</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Nikolay V. Semionov, Doctor of Physical and Mathematical Sciences</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яцких</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yatskikh</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Яцких Алексей Анатольевич, кандидат физико-математических наук </p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Aleksey A. Yatskikh, Candidate of Physical and Mathematical Sciences </p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шмакова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shmakova</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шмакова Александра Валерьевна, кандидат физико-математических наук</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Alexandra V. Shmakova, Candidate of Physical and Mathematical Sciences</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермолаев</surname><given-names>Ю. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Yermolaev</surname><given-names>Yu. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ермолаев Юрий Геннадьевич, кандидат физико-математических наук</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Yuri G. Yermolaev, Candidate of Physical and Mathematical Sciences</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смородский</surname><given-names>Б. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Smorodsky</surname><given-names>B. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смородский Борис Владимирович, кандидат физико-математических наук</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Boris V. Smorodsky, Candidate of Physical and Mathematical Sciences</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт теоретической и прикладной механики им. С. А. Христиановича СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Khristianovich Institute of Theoretical and Applied Mechanics of SB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>18</day><month>07</month><year>2024</year></pub-date><volume>19</volume><issue>2</issue><fpage>95</fpage><lpage>110</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Питеримова М.В., Косинов А.Д., Семёнов Н.В., Яцких А.А., Шмакова А.В., Ермолаев Ю.Г., Смородский Б.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Питеримова М.В., Косинов А.Д., Семёнов Н.В., Яцких А.А., Шмакова А.В., Ермолаев Ю.Г., Смородский Б.В.</copyright-holder><copyright-holder xml:lang="en">Piterimova M.V., Kosinov A.D., Semionov N.V., Yatskikh A.A., Shmakova A.V., Yermolaev Y.G., Smorodsky B.V.</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://nguphys.elpub.ru/jour/article/view/325">https://nguphys.elpub.ru/jour/article/view/325</self-uri><abstract><p>В работе рассматриваются экспериментальные результаты по развитию волнового поезда в продольном следе в пограничном слое плоской пластины при числе Маха 2,5. Выполнен анализ пространственно-временных распределений и частотно-волновых спектров пульсаций, а также их волновых характеристик в линейной и слабонелинейной фазе развития волнового поезда в однородном и неоднородном пограничном слое при фиксированной мощности источника контролируемых возмущений. В ходе анализа результатов субгармонический резонанс не наблюдался. Разложение по волновому спектру стационарной неоднородности и экспериментальные данные о волновых характеристиках и спектрах возмущений позволили предложить варианты взаимодействия волн для режима наклонного перехода.</p></abstract><trans-abstract xml:lang="en"><p>The paper discusses experimental results on the wave train development in a longitudinal trace in the flat plate boundary layer at Mach 2.5. An analysis of the spatiotemporal distributions and frequency-wave spectra of pulsations, as well as their wave characteristics in the linear and weakly nonlinear phase of the wave train development in a homogeneous and inhomogeneous boundary layer at a fixed power of the controlled disturbances source has been carried out. During the analysis of the results, no subharmonic resonance was observed. Expansion into the wave spectrum of a stationary inhomogeneity and experimental data on wave characteristics and disturbance spectra made it possible to propose options for wave interaction for oblique breakdown.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сверхзвуковой поток</kwd><kwd>экспериментальные исследования</kwd><kwd>плоская пластина</kwd><kwd>контролируемые возмущения</kwd><kwd>наклонный переход</kwd></kwd-group><kwd-group xml:lang="en"><kwd>supersonic flow</kwd><kwd>experimental studies</kwd><kwd>flat plate</kwd><kwd>controlled disturbances</kwd><kwd>oblique breakdown</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена по теме государственного задания. Эксперименты проведены с использованием оборудования ЦКП «Механика» (ИТПМ СО РАН).</funding-statement><funding-statement xml:lang="en">The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation. 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