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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Fluid Dynamics</journal-id><journal-title-group><journal-title xml:lang="en">Fluid Dynamics</journal-title><trans-title-group xml:lang="ru"><trans-title>Известия Российской академии наук. Механика жидкости и газа</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1024-7084</issn><issn publication-format="electronic">3034-5340</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">672571</article-id><article-id pub-id-type="doi">10.31857/S0568528122600308</article-id><article-id pub-id-type="edn">AFAUGH</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Formation of Shock-Wave Flow during Nanosecond Discharge Localization in Unsteady Flow in a Channel with Obstacles</article-title><trans-title-group xml:lang="ru"><trans-title>ФОРМИРОВАНИЕ УДАРНО-ВОЛНОВОГО ТЕЧЕНИЯ ПРИ ЛОКАЛИЗАЦИИ НАНОСЕКУНДНЫХ РАЗРЯДОВ В НЕСТАЦИОНАРНОМ ПОТОКЕ В КАНАЛЕ С ПРЕПЯТСТВИЕМ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dolbnya</surname><given-names>D. I.</given-names></name><name xml:lang="ru"><surname>Долбня</surname><given-names>Д. И.</given-names></name></name-alternatives><email>tatarenkova.darya@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Znamenskaya</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Знаменская</surname><given-names>И. А.</given-names></name></name-alternatives><email>tatarenkova.darya@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lutsky</surname><given-names>A. E.</given-names></name><name xml:lang="ru"><surname>Луцкий</surname><given-names>А. Е.</given-names></name></name-alternatives><email>tatarenkova.darya@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sysoev</surname><given-names>N. N.</given-names></name><name xml:lang="ru"><surname>Сысоев</surname><given-names>Н. Н.</given-names></name></name-alternatives><email>tatarenkova.darya@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Physics Department of Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова, Физический факультет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Keldysh Applied Mathematics Institute of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт прикладной математики им. М.В. Келдыша РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-01-01" publication-format="electronic"><day>01</day><month>01</month><year>2023</year></pub-date><issue>1</issue><fpage>144</fpage><lpage>150</lpage><history><date date-type="received" iso-8601-date="2025-02-27"><day>27</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Д.И. Долбня, И.А. Знаменская, А.Е. Луцкий, Н.Н. Сысоев</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Д.И. Долбня, И.А. Знаменская, А.Е. Луцкий, Н.Н. Сысоев</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Д.И. Долбня, И.А. Знаменская, А.Е. Луцкий, Н.Н. Сысоев</copyright-holder><copyright-holder xml:lang="ru">Д.И. Долбня, И.А. Знаменская, А.Е. Луцкий, Н.Н. Сысоев</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/1024-7084/article/view/672571">https://journals.eco-vector.com/1024-7084/article/view/672571</self-uri><abstract xml:lang="en"><p>The results of studies of the effect of volume and surface pulse discharges on high-speed gas flow in a rectangular shock-tube channel with a change in the profile (obstacle on the lower wall) are given. A single nanosecond surface discharge or a discharge with preionization induced by the plasma electrodes (combined discharge) was initiated in flow downstream of the shock wave with the Mach numbers Ms = 3.2–3.4. The obstacle determines the distribution of the parameters of flow past the obstacle and the pulse discharge plasma redistribution. The density fields of gas dynamic flow under the experimental conditions are obtained and compared with the discharge plasma distribution. It is shown that the shock-wave effect of the discharge on flow behind the obstacle continued from 25 to 70 μs.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181324823376">Представлены результаты исследований по воздействию импульсного объемного и поверхностного разрядов на высокоскоростное течение газа в прямоугольном канале ударной трубы с изменением профиля (препятствием на нижней стенке). Однократный наносекундный поверхностный разряд и разряд с предыонизацией от плазменных электродов (комбинированный разряд) инициировался в потоке за ударной волной с числами Маха Мs 3.2–3.4. Препятствие определяет распределение параметров обтекающего его потока и перераспределение плазмы импульсного разряда. Численным моделированием получены поля плотности газодинамического потока в условиях эксперимента и проведено сравнение с распределением плазмы разряда. Показано, что ударно-волновое воздействие разряда на поток за препятствием продолжалось от 25 до 70 мкс.</p></trans-abstract><kwd-group xml:lang="en"><kwd>shock wave</kwd><kwd>discharge self-localization</kwd><kwd>plasma electrodes</kwd><kwd>separation flow</kwd><kwd>volume discharge</kwd><kwd>surface discharge</kwd><kwd>rapid heating effect</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ударная волна</kwd><kwd>самолокализация разряда</kwd><kwd>плазменные электроды</kwd><kwd>отрывное течение</kwd><kwd>объемный разряд</kwd><kwd>поверхностный разряд</kwd><kwd>эффект быстрого нагрева</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Стариковский А.Ю., Александров Н.Л. Управление газодинамическими потоками с помощью сверхбыстрого локального нагрева в сильнонеравновесной импульсной плазме // Физика плазмы. 2021. Т. 47. № 2. 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