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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">680952</article-id><article-id pub-id-type="doi">10.31857/S0207401X24100054</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Combustion, explosion and shock waves</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Горение, взрыв и ударные волны</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">Three-dimensional mathematical simulation of two-phase detonation in the system of gaseous oxydizer with fuel droplets</article-title><trans-title-group xml:lang="ru"><trans-title>Трехмерное математическое моделирование детонации в двухфазных системах газообразный окислитель – капли жидкого горючего</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ivanov</surname><given-names>V. S.</given-names></name><name xml:lang="ru"><surname>Иванов</surname><given-names>В. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smfrol@chph.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Frolov</surname><given-names>S. M.</given-names></name><name xml:lang="ru"><surname>Фролов</surname><given-names>С. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smfrol@chph.ras.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский ядерный университет “МИФИ”</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2024</year></pub-date><volume>43</volume><issue>10</issue><fpage>61</fpage><lpage>70</lpage><history><date date-type="received" iso-8601-date="2025-05-29"><day>29</day><month>05</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</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/680952">https://transsyst.ru/0207-401X/article/view/680952</self-uri><abstract xml:lang="en"><p>The results of a three-dimensional numerical study of the propagation of detonation waves in a two-phase mixture of liquid iso-octane with air are presented. The detonation calculation technique is based on Navier-Stocks equations with the simulation of liquid phase evolution using the Lagrangian formalism. Numerical models consider droplet movement, evaporation and breakup as well as finite-rate mixing and chemical transformations. The reliability of the method is confirmed by the comparison of predicted and measured velocities of heterogeneous detonation in a vertical channel of square cross-section. The influence of the prehistory on the formation of a two-phase detonable mixture in the channel on the propagation velocity and structure of detonation waves is considered. The influence of droplet coagulation is also taken into account. New data on the spatiotemporal structure of a two-phase detonation wave have been obtained.</p></abstract><trans-abstract xml:lang="ru"><p>Приведены результаты трехмерного моделирования процесса распространения детонационных волн в двухфазной смеси воздух – капли жидкого изооктана. Методика расчета детонации основана на решении трехмерных уравнений двухфазного сжимаемого турбулентного реагирующего течения с учетом движения, дробления, нагрева и испарения капель и конечных скоростей смешения топливных компонентов и химических превращений. Достоверность методики проверена путем сравнения расчетных и измеренных скоростей гетерогенной детонации в вертикальном канале квадратного сечения. Рассмотрено влияние предыстории формирования двухфазной горючей смеси на скорость и структуру детонационной волны, в частности учтено влияние коагуляции капель. Получены новые данные о структуре детонационной волны в двухфазных системах.</p></trans-abstract><kwd-group xml:lang="en"><kwd>heterogeneous detonation</kwd><kwd>three-dimensional mathematical simulation</kwd><kwd>droplet coagulation</kwd><kwd>detonation structure</kwd><kwd>detonation velocity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гетерогенная детонация</kwd><kwd>трехмерное математическое моделирование</kwd><kwd>коагуляция капель</kwd><kwd>структура детонации</kwd><kwd>скорость детонации</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>23-23-00364</award-id></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">G.D. Roy, S.M. 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