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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">672130</article-id><article-id pub-id-type="doi">10.31857/S1024708424010032</article-id><article-id pub-id-type="edn">sebzvr</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">The diffusion stability of an externally driven cavitation bubble in micro-confinement</article-title><trans-title-group xml:lang="ru"><trans-title>Диффузионная устойчивость кавитационного пузырька в жидком микровключении под действием внешней вынуждающей силы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Leonov</surname><given-names>К. V.</given-names></name><name xml:lang="ru"><surname>Леонов</surname><given-names>К. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>k.leonoff@inbox.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Akhatov</surname><given-names>I. Sh.</given-names></name><name xml:lang="ru"><surname>Ахатов</surname><given-names>И. Ш.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>k.leonoff@inbox.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Bashkir State Medical University</institution></aff><aff><institution xml:lang="ru">Башкирский государственный медицинский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-08-27" publication-format="electronic"><day>27</day><month>08</month><year>2024</year></pub-date><issue>1</issue><fpage>63</fpage><lpage>76</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 ©; 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/1024-7084/article/view/672130">https://transsyst.ru/1024-7084/article/view/672130</self-uri><abstract xml:lang="en"><p>The diffusion stability of a single cavitation bubble in a spherical liquid cell surrounded by an infinite elastic solid is considered. The time-periodic pressure in the solid far away from the liquid cell is used as an external driving, which initiates bubble oscillations along with the gas diffusion process in the bubble-in-cell system. The work is based on the engineering approximation according to which the bubble growth/reduction is considered on average, assuming that during the period of the external driving the mass of gas in the bubble does not noticeably change. This theory predicts the existence of stably oscillating bubbles in confined liquid undergoing an external driving force. Three possible diffusion regimes are revealed: 1) total bubble dissolution, 2) partial bubble dissolution, and 3) partial bubble growth, where the last two regimes provide the diffusion stability in the bubble-in-cell system. The parametric study of the influence of the gas concentration dissolved in the liquid on the resulting stable bubble size is conducted. The obtained results are compared with the results for the case of the stable bubble oscillations in the pressure sound field in a bulk (infinite) liquid. The theoretical findings of the present study can be used for improvement of the modern applications of ultrasound technology.</p></abstract><trans-abstract xml:lang="ru"><p>Рассматривается задача диффузионной устойчивости одиночного кавитационного пузырька в сферической ячейке жидкости (жидком микровключении), окруженной бесконечным упругим твердым телом. В качестве внешней вынуждающей силы используется периодическое во времени давление в твердом теле вдали от ячейки жидкости, которое инициирует колебания пузырька, сопровождающиеся процессом диффузии газа в системе пузырь–в–ячейке. Использовано инженерное приближение, согласно которому увеличение/уменьшение пузырька рассматривается в среднем в предположении, что за период внешнего воздействия масса газа в пузырьке заметно не меняется. Разработанная теория предсказывает существование устойчиво осциллирующих пузырьков в ограниченной жидкости под действием внешней вынуждающей силы. Выявлены три возможных режима диффузии: 1) полное растворение пузырька, 2) частичное растворение пузырька и 3) частичный рост пузырька; последние два режима соответствуют диффузионной устойчивости в системе пузырь–в–ячейке. Проведено параметрическое исследование влияния концентрации газа, растворенного в жидкости, на результирующий устойчивый размер пузырька. Полученные результаты сравниваются с результатами для случая устойчивых колебаний пузырька в звуковом поле давления в бесконечной жидкости. Теоретические выводы могут быть использованы для совершенствования современных приложений ультразвуковых технологий.</p></trans-abstract><kwd-group xml:lang="en"><kwd>bubble dynamics</kwd><kwd>cavitation</kwd><kwd>ultrasound</kwd><kwd>diffusion</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>динамика пузырька</kwd><kwd>кавитация</kwd><kwd>ультразвук</kwd><kwd>диффузия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Clift R., Grace J., Weber M. Bubbles, Drops and Particles. N. Y.: Academic Press, 1978. 380 p.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Gondrexon N., Renaudin V., Boldo P., Gonthier Y., Bernis A., Pettier C. Degassing effect and gas-liquid transfer in a high frequency sonochemical reactor // J. Chem. Eng. 1997. V. 66(1). 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