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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Himičeskaâ fizika</journal-id><journal-title-group><journal-title xml:lang="en">Himičeskaâ fizika</journal-title><trans-title-group xml:lang="ru"><trans-title>Химическая физика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0207-401X</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">686553</article-id><article-id pub-id-type="doi">10.31857/S0207401X25060073</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Dynamics of transport processes</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Динамика транспортных процессов</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Equations of Multimoment Hydrodynamics in the Problem of Flowing Around a Sphere. 1. Construction of Asymmetric Distributions of Hydrodynamic Values</article-title><trans-title-group xml:lang="ru"><trans-title>Уравнения многомоментной гидродинамики в задаче обтекания сферы. 1. Построение асимметричных распределений гидродинамических величин</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lebed</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Лебедь</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lebed-ivl@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Applied Mechanics of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт прикладной механики Российской академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-06-04" publication-format="electronic"><day>04</day><month>06</month><year>2025</year></pub-date><volume>44</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>86</fpage><lpage>96</lpage><history><date date-type="received" iso-8601-date="2025-07-02"><day>02</day><month>07</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-07-02"><day>02</day><month>07</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0207-401X/article/view/686553">https://transsyst.ru/0207-401X/article/view/686553</self-uri><abstract xml:lang="en"><p>The equations of multimoment hydrodynamics are used to interpret flows behind the sphere that do not have axial symmetry. The equations of multimoment hydrodynamics follow from the equations for pair distribution functions. The derivation of the equations is free from approximations similar to the Boltzmann hypothesis. In accordance with the general approach, the pair function is represented as an infinite series of products of trajectory invariants with unknown coefficients. A finite number of terms are preserved in this series, which make it possible to construct asymmetric distributions of hydrodynamic values. Analytical expressions for the principal hydrodynamic values are presented. Solutions of nonlinear differential equations for unknown coefficients will make it possible to trace the evolution of the observed asymmetric flows, culminating in pronounced turbulence.</p></abstract><trans-abstract xml:lang="ru"><p>Уравнения многомоментной гидродинамики привлечены для интерпретации течений за сферой, не обладающих осевой симметрией. Уравнения многомоментной гидродинамики следуют из уравнений для парных функций распределения. Вывод уравнений не содержит приближений, подобных гипотезе Больцмана. В соответствии с общим подходом парная функция представляется в виде бесконечного ряда произведений траекторных инвариантов с неизвестными коэффициентами. В этом ряду сохраняется конечное число членов, позволяющих построить асимметричные распределения гидродинамических величин. Представлены аналитические выражения для главных гидродинамических величин. Решения нелинейных дифференциальных уравнений для неизвестных коэффициентов позволят проследить за эволюцией наблюдаемых асимметричных течений, завершающейся ярко выраженной турбулентностью.</p></trans-abstract><kwd-group xml:lang="en"><kwd>multimoment hydrodynamics</kwd><kwd>asymmetric distributions</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>многомоментная гидродинамика</kwd><kwd>асимметричные распределения</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">L.G. Loitsyanskii. Mechanics of Liquids and Gases. 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