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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">vmait</journal-id><journal-title-group><journal-title xml:lang="ru">Computational Mathematics and Information Technologies</journal-title><trans-title-group xml:lang="en"><trans-title>Computational Mathematics and Information Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2587-8999</issn><publisher><publisher-name>Донской государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23947/2587-8999-2023-7-2-52-59</article-id><article-id custom-type="elpub" pub-id-type="custom">vmait-100</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>Mathematical Modelling (Математическое моделирование)</subject></subj-group></article-categories><title-group><article-title>Моделирование и анализ динамики квази-2D-турбулентности в мелководных водоемах</article-title><trans-title-group xml:lang="en"><trans-title>Modeling and Analysis of Quasi-2D Turbulence Dynamics in Shallow Waters</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9656-8466</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Проценко</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Protsenko</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Проценко Софья Владимировна, доцент кафедры математики, научный сотрудник, кандидат физико-математических наук</p><p>347936, г. Таганрог, ул. Инициативная, 48</p><p>AuthorID: 882674</p></bio><bio xml:lang="en"><p>Sofia V Protsenko, Associate Professor of the Department of Mathematics, Researcher, PhD (Physical and Mathematical Sciences)</p><p>48, Initiative St., Taganrog, 347936</p><p>AuthorID: 882674</p></bio><email xlink:type="simple">rab5555@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7911-3558</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Проценко</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Protsenko</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Проценко Елена Анатольевна, доцент кафедры математики, ведущий научный сотрудник, кандидат физико-математических наук</p><p>347936, г. Таганрог, ул. Инициативная, 48</p><p>AuthorID: 684348</p></bio><bio xml:lang="en"><p>Elena A Protsenko, Associate Professor of the Mathematics Department, Leading Researcher, PhD (Physical and Mathematical Sciences)</p><p>48, Initiative St., Taganrog, 347936</p><p>AuthorID: 684348</p></bio><email xlink:type="simple">eapros@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Таганрогский институт им. А. П. Чехова (филиал) РГЭУ (РИНХ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Taganrog Institute named after A. P. Chekhov (branch) of RSUE</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>09</day><month>07</month><year>2023</year></pub-date><volume>7</volume><issue>2</issue><fpage>52</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Проценко С.В., Проценко Е.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Проценко С.В., Проценко Е.А.</copyright-holder><copyright-holder xml:lang="en">Protsenko S.V., Protsenko E.A.</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.cmit-journal.ru/jour/article/view/100">https://www.cmit-journal.ru/jour/article/view/100</self-uri><abstract><sec><title>Введение</title><p>Введение. Работа посвящена изучению генерации и развития турбулентных структур в мелководных потоках. Для оптимального управления водным ресурсом необходимо знать, какие будут последствия при изменении системы течения в результате вмешательства человека. В основном все потоки жидкости, которые относятся к практике гражданского строительства, имеют турбулентный характер. Это, например, речные и русловые потоки, приливные течения в океанах и прибрежных морях. Неглубокие течения в окружающей среде часто включают в себя широкий диапазон масштабов вихрей, начиная от микромасштабных вихрей и заканчивая крупномасштабными когерентными структурами с горизонтальными масштабами длины, которые намного превышают глубину воды (L &gt;&gt; H). Существование таких крупных структур — типичная характеристика турбулентности при мелком течении. Это указывает на необходимость проведения системного анализа проблемы, а также моделирования подобных сложно формализуемых систем. Целью данной работы является моделирование и анализ динамики структур квази-2D-турбулентности.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Исследуются крупномасштабные квази-2D когерентные структуры (2DCS) в зависимости от источника и локализации в столбе жидкости. Рассматриваются турбулентные течения в канале, удовлетворяющие несжимаемым уравнениям Навье-Стокса. Численный эксперимент выполнен на основе подхода «моделирование крупных вихрей» (LES).</p></sec><sec><title>Результаты исследования</title><p>Результаты исследования. Построен сценарий динамики структур квази-2D-турбулентности береговой зоны. Предсказано формирование вихревых структур.</p></sec><sec><title>Обсуждение и заключения</title><p>Обсуждение и заключения. Развитие двумерной турбулентности в неглубоких потоках служит иллюстрацией процессов, которые управляют квази-двумерной турбулентностью, включая слияние отдельных вихрей. Основным механизмом, управляющим распадом 2DCS, являются потери энергии из-за трения о дно. При этом, чем больше размер вихря относительно глубины, тем быстрее происходит прямое рассеивание его кинетической энергии.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The work is devoted to the study of the generation and development of turbulent structures in shallow-water flows. For optimal water resource management, it is necessary to know what the consequences will be if the flow system changes as a result of human intervention. Basically, all fluid flows that relate to the practice of civil engineering are turbulent in nature. These are, for example, river and channel flows, tidal currents in the oceans and coastal seas. Shallow currents in the environment often include a wide range of vortex scales, ranging from micro-scale vortices to large-scale coherent structures with horizontal length scales that far exceed the depth of water (L &gt;&gt; H). The existence of such large structures is a typical characteristic of turbulence in shallow flow. This indicates the need for a systematic analysis of the problem, as well as modeling of such complex formalized systems. The purpose of this work is to model and analyze the dynamics of quasi-2D turbulence structures.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods. Large-scale quasi-2D coherent structures (2 DCS) are investigated depending on the source and localization in the liquid column. Turbulent flows in the channel satisfying incompressible Navier-Stokes equations are considered. The numerical experiment was carried out on the basis of the “large eddy simulation” (LES) approach.</p></sec><sec><title>The Results of the Study</title><p>The Results of the Study. Scenario of the dynamics of quasi-2D turbulence structures of the coastal zone is constructed, the formation of vortex structures is predicted.</p><p>Discussion and Conclusions. The development of two-dimensional turbulence in shallow flows illustrates the processes that control quasi-two-dimensional turbulence, including the merging of individual vortices. The main mechanism controlling the decay of 2DCS is the loss of energy due to friction on the bottom, while the larger the size of the vortex relative to the depth, the faster the direct dissipation of its kinetic energy occurs.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>турбулентные структуры</kwd><kwd>мелководные потоки</kwd><kwd>крупномасштабные квази-2D когерентные структуры (2DCS)</kwd><kwd>квази-2D-турбулентность</kwd><kwd>масштаб вихрей</kwd></kwd-group><kwd-group xml:lang="en"><kwd>turbulent structures</kwd><kwd>shallow water channels</kwd><kwd>large-scale quasi-2D coherent structures (2PCS)</kwd><kwd>quasi-2D turbulence</kwd><kwd>vortex scale</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 22-11-00295. https://rscf.ru/project/22-11-00295/</funding-statement><funding-statement xml:lang="en">The study was supported by the Russian Science Foundation grant No. 22-11-00295. https://rscf.ru/project/22-11-00295/</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">Jirka G.H. 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