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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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2024-25-2-350-358</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1750</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>История математики и приложений</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Сomputer science</subject></subj-group></article-categories><title-group><article-title>Излучение звука цилиндром, обтекаемым стационарным потоком идеальной жидкости</article-title><trans-title-group xml:lang="en"><trans-title>Sound radiation of a cylinder streamlined by a stationary flow of an ideal liquid</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>Толоконников</surname><given-names>Лев Алексеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Tolokonnikov</surname><given-names>Lev Alexeevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences, professor</p></bio><email xlink:type="simple">TolokonnikovLA@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>Толоконников</surname><given-names>Сергей Львович</given-names></name><name name-style="western" xml:lang="en"><surname>Tolokonnikov</surname><given-names>Sergey Lvovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences, professor</p></bio><email xlink:type="simple">tolsl@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Тульский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Tula State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>19</day><month>07</month><year>2024</year></pub-date><volume>25</volume><issue>2</issue><fpage>350</fpage><lpage>358</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Толоконников Л.А., Толоконников С.Л., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Толоконников Л.А., Толоконников С.Л.</copyright-holder><copyright-holder xml:lang="en">Tolokonnikov L.A., Tolokonnikov S.L.</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.chebsbornik.ru/jour/article/view/1750">https://www.chebsbornik.ru/jour/article/view/1750</self-uri><abstract><p>В статье рассматривается задача об акустическом излучении цилиндра, обтекаемого стационарным потоком идеальной жидкости.Полагается, что скорость набегающего потока значительно меньшей скорости звука.Поверхность цилиндра совершает гармонические колебания.Получено приближенное аналитическое решение задачи, построенное с использованием потенциала скорости набегающего на тело потока и потенциала скорости акустического поля неподвижного излучателя.Рассмотрены частные случаи излучения звука цилиндром.Представлены результаты численных расчетов диаграмм направленности акустического поля в дальней зоне при разных значениях отношения скорости потока к скорости звука и волнового размера цилиндра.</p></abstract><trans-abstract xml:lang="en"><p>In the article the problem of the acoustic radiation of a cylinder streamlined by a stationary flow of an ideal liquid is considered It is assumed that the velocity of the incoming flow is significantly lower than the speed of sound. The surface of the spheroid makes harmonic vibrations.An approximate analytical solution of the problem was obtained with using the speed potential of the oncoming on the body flow and the speed potential of the stationary radiator acoustic field.Special cases of sound radiation by a cylinder are considered.The results of numerical calculations of polar diagrams of the acoustic pressure distributionon the surface of a spheroid at different values of the ratio of the flow velocity to the speed of sound and the wave size of the cylinder are presented.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>акустическое излучение</kwd><kwd>цилиндр</kwd><kwd>идеальная жидкость</kwd><kwd>потенциальное течение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>acoustic radiation</kwd><kwd>cylinder</kwd><kwd>ideal fluid</kwd><kwd>potential flow</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Министерства просвещения РФ по теме «Теоретико- числовые методы в приближенном анализе и их приложения в механике и физике» (соглашение № 073-00033- 24-01 от 09.02.2024).</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">Ржевкин С. 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