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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">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">691961</article-id><article-id pub-id-type="doi">10.31857/S1024708425030018</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Numerical Analysis of Rarefied Gas Flow through a Periodic System of Channels</article-title><trans-title-group xml:lang="ru"><trans-title>ЧИСЛЕННЫЙ АНАЛИЗ ТЕЧЕНИЯ РАЗРЕЖЕННОГО ГАЗА ЧЕРЕЗ ПЕРИОДИЧЕСКУЮ СИСТЕМУ КАНАЛОВ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Voronich</surname><given-names>I. V</given-names></name><name xml:lang="ru"><surname>Воронич</surname><given-names>И. В</given-names></name></name-alternatives><email>voronich.iv@mipt.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Titarev</surname><given-names>V. A</given-names></name><name xml:lang="ru"><surname>Титарев</surname><given-names>В. А</given-names></name></name-alternatives><email>vladimir.titarev@frccsc.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kudriashov</surname><given-names>A. V</given-names></name><name xml:lang="ru"><surname>Кудряшов</surname><given-names>А. В</given-names></name></name-alternatives><email>kudriashov.av@mipt.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Federal Research Center “Computer Science and Control” of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Федеральный исследовательский центр “Информатика и управление” РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Moscow Institute of Physics and Technology</institution></aff><aff><institution xml:lang="ru">Московский физико-технический институт, Физтех</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-07-15" publication-format="electronic"><day>15</day><month>07</month><year>2025</year></pub-date><issue>3</issue><issue-title xml:lang="en">NO3 (2025)</issue-title><issue-title xml:lang="ru">№3 (2025)</issue-title><fpage>3</fpage><lpage>14</lpage><history><date date-type="received" iso-8601-date="2025-10-04"><day>04</day><month>10</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><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2025-07-02"/></permissions><self-uri xlink:href="https://rjsvd.com/1024-7084/article/view/691961">https://rjsvd.com/1024-7084/article/view/691961</self-uri><abstract xml:lang="en"><p>Rarefied gas flows through a planar periodic system of rectangular channels (membrane) are analyzed in a wide range of Knudsen numbers. The problem is studied based on the numerical solution of the kinetic equation with the Shakhov -model collision integral and the Navier-Stokes equations of the compressible medium. The main attention is paid to the calculation of the mass flow rate as a function of the permeability, the relative channel length, and the rarefaction parameter.</p></abstract><trans-abstract xml:lang="ru"><p>В работе представлен анализ течения разреженного газа через плоскую периодическую систему прямоугольных каналов (мембрану) в широком диапазоне чисел Кнудсена. Задача исследована на основе численного решения кинетического уравнения с -модельным интегралом столкновений Е.М. Шахова и уравнений Навье–Стокса сжимаемой среды. Основное внимание уделено расчету массового расхода в зависимости от проницаемости, относительной длины канала и параметра разрежения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>membrane</kwd><kwd>channel</kwd><kwd>kinetic equation</kwd><kwd>S-model</kwd><kwd>rarefied gas</kwd><kwd>computational aerodynamics</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>мембрана</kwd><kwd>канал</kwd><kwd>кинетическое уравнение</kwd><kwd>S-модель</kwd><kwd>разреженный газ</kwd><kwd>вычислительная аэродинамика</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнялась с использованием инфраструктуры Центра коллективного пользования “Высокопроизводительные вычисления и большие данные” (ЦКП “Информатика”) ФИЦ ИУ РАН (г. Москва).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Dou H., Xu M., Wang B., Zhang Z., Wen G., Zheng Y., Luo D., Zhao L., Yu A., Zhang L., Jiang Z., Chen Z. 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