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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">10.23947/2587-8999-2024-8-2-9-23</article-id><article-id custom-type="elpub" pub-id-type="custom">vmait-155</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>Computational Mathematics (Вычислительная математика)</subject></subj-group></article-categories><title-group><article-title>Решатель с адаптивным измельчением сеток для регуляризованных уравнений мелкой воды</article-title><trans-title-group xml:lang="en"><trans-title>An Adaptive Mesh Refinement Solver for Regularized Shallow Water Equations</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5915-0941</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бут</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>But</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бут Иван Игоревич, инженер-исследователь лаборатории цифрового моделирования технических систем; младший научный сотрудник</p><p>109004, Москва, ул. Александра Солженицына, 25</p><p>125047, Москва, Миусская пл., 4</p></bio><bio xml:lang="en"><p>Ivan I. But, research engineer, Open-source Software Laboratory for Digital Modelling of Technical Systems; Junior Researcher</p><p>25, Aleksandr Solzhenitsyn st., Moscow, 109004</p><p>4, Miusskaya sq., Moscow, 125047</p></bio><email xlink:type="simple">ivan.but@ispras.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/0009-0008-8849-5218</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кирюшина</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kiryushina</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кирюшина Мария Александровна, научный сотрудник; кандидатфизико-математических наук</p><p>109004, Москва, ул. Александра Солженицына, 25</p><p>125047, Москва, Миусская пл., 4</p></bio><bio xml:lang="en"><p>Maria A. Kiryushina, research associate; phd</p><p>25, Aleksandr Solzhenitsyn st., Moscow, 109004</p><p>4, Miusskaya sq., Moscow, 125047</p></bio><email xlink:type="simple">m_ist@mail.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/0000-0002-7006-6879</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Елистратов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Elistratov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елистратов Степан Алексеевич, младший научный сотрудник, лаборатория геофизической гидродинамики; стажер-исследователь, лаборатория цифрового моделирования технических систем</p><p>117218, Москва, Нахимовский пр., 65</p><p>109004, Москва, ул. Александра Солженицына, 25</p><p>630090, Новосибирск, проспект Академика Коптюга, 4</p></bio><bio xml:lang="en"><p>Stepan A. Elistratov, junior researcher; research intern</p><p>36, Nakhimovsky ave., Moscow, 117218</p><p>5, Aleksandra Solzhenitsyna st., Moscow, 109004</p></bio><email xlink:type="simple">sa.elist-ratov@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6169-5270</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Елизарова</surname><given-names>Т. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Elizarova</surname><given-names>T. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елизарова Татьяна Геннадьевна, главный научный сотрудник, доктор физико-математических наук, профессор</p><p>125047, Москва, Миусская пл., 4</p></bio><bio xml:lang="en"><p>Tatiana G. Elizarova, chief researcher; doctor of physico-mathematical sciences, professor</p><p>4, Miusskaya sq., Moscow, 125047</p></bio><email xlink:type="simple">telizar@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-0044-3418</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тиняков</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Tiniakov</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тиняков Артём Дмитриевич, студент 5 курса кафедры проблем передачи информации и анализа данных</p><p>141701, Долгопрудный, Институтский переулок, 9</p></bio><bio xml:lang="en"><p>Artem D. T iniakov, 5th year student of the Department of Information Transmission and Data Analysis Problems</p><p>9, Institutskiy pereulok, Dolgoprudny, 141701</p></bio><email xlink:type="simple">tiniakov.ad@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт системного программирования Российской академии наук; Институт прикладной математики им. М.В. Келдыша Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of System Programming of the Russian Academy of Sciences; Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт системного программирования Российской академии наук; Институт океанологии им. П.П. Ширшова Российской академии наук; Институт математики им. С.Л. Соболева СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of System Programming of the Russian Academy of Sciences; Shirshov Institute of Oceanology of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт прикладной математики им. М.В. Келдыша Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Институт системного программирования Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of System Programming of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>04</day><month>07</month><year>2024</year></pub-date><volume>8</volume><issue>2</issue><fpage>9</fpage><lpage>23</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бут И.И., Кирюшина М.А., Елистратов С.А., Елизарова Т.Г., Тиняков А.Д., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Бут И.И., Кирюшина М.А., Елистратов С.А., Елизарова Т.Г., Тиняков А.Д.</copyright-holder><copyright-holder xml:lang="en">But I.I., Kiryushina M.A., Elistratov S.A., Elizarova T.G., Tiniakov A.D.</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/155">https://www.cmit-journal.ru/jour/article/view/155</self-uri><abstract><p>Введение. Представлен новый решатель с адаптивным измельчением сеток SWqgdAMR на базе открытой программной платформы AMReX. Новый решатель основан на регуляризованных уравнениях мелкой воды. В работе описаны уравнения, их дискретизация и особенности реализации в AMReX. Работоспособность SWqgdAMR была показана на двух тестовых задачах: двумерная задача прорыва круговой дамбы (распад столба жидкости) и задача о распаде двух столбов жидкости, разных по высоте.Материалы и методы. Решатель SWqgdAMR написан в рамках расширения применимости регуляризованных уравнений в задачах, требующих больших вычислительных мощностей и адаптивных сеток. SWqgdAMR является первым решателем на базе КГД алгоритма в программном комплексе AMReX. Реализация и валидация SWqgdAMR является основным шагом на пути дальнейшего расширения комплекса КГД программ.Результаты исследования. Детально описан и протестирован решатель AMReX уравнений мелкой воды SWqgdAMR с адаптивным измельчением сеток. Для валидации SWqgdAMR использовались две двумерные задачи: о прорыве цилиндрической плотины и о прорыве двух цилиндрических плотин разной высоты. Представленный решатель показал высокую эффективность, а использование технологии адаптивного измельчения сетки позволило ускорить расчёт в 56 раз по сравнению с расчётом на стационарной сетке.Обсуждение и заключения. В алгоритм может быть включена батиметрия дна, внешние силы (сила ветра, трение о дно, силы Кориолиса), а также учет подвижности береговой линии при осушении-наводнении, как это уже было сделано в рамках индивидуальных кодов для РУМВ. В данной реализации КГД алгоритма не тестировались перспективные возможности применения распараллеливания вычислений на графические ядра.</p></abstract><trans-abstract xml:lang="en"><p>Introduction. We present a novel adaptive mesh refinement (AMR) solver, SWqgdAMR, based on the open software platform AMReX. The new solver is grounded in regularized shallow water equations. This paper details the equations, their discretization, and implementation features within AMReX. The efficacy of SWqgdAMR is demonstrated through two test cases: a two-dimensional circular dam break (collapse of a liquid column) and the collapse of two liquid columns of different heights.Materials and Methods. The SWqgdAMR solver is developed to extend the applicability of regularized equations in problems requiring high computational power and adaptive grids. SWqgdAMR is the first solver based on the quasigas dynamic (QGD) algorithm within the AMReX framework. The implementation and validation of SWqgdAMR represent a crucial step towards the further expansion of the QGD software suite.Results. The AMReX-based shallow water equations solver SWqgdAMR with adaptive mesh refinement is described and tested in detail. Validation of SWqgdAMR involved two-dimensional problems: the breach of a cylindrical dam and the breach of two cylindrical dams of different heights. The presented solver demonstrated high efficiency, with the use of adaptive mesh refinement technology accelerating the computation by 56 times compared to a stationary grid calculation.Discussion and Conclusions. The algorithm can be expanded to include bathymetry, external forces (wind force, bottom friction, Coriolis forces), and the mobility of the shoreline during wetting and drying phases, as has been done in individual codes for regularized shallow water equations (RSWE). The current implementation of the QGD algorithm did not test the potential for parallel computing on graphical cores.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>уравнения мелкой воды</kwd><kwd>адаптивное измельчение сеток</kwd><kwd>квазигазодинамические (КГД) уравнения</kwd><kwd>регуляризованные уравнения мелкой воды (РУМВ)</kwd><kwd>AMReX</kwd></kwd-group><kwd-group xml:lang="en"><kwd>shallow water equations</kwd><kwd>adaptive mesh refinement</kwd><kwd>quasigas dynamic equations</kwd><kwd>regularized shallow water equations</kwd><kwd>AMReX</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Московского центра фундаментальной и прикладной математики. Соглашение с Министерством науки и высшего образования РФ № 075-15-2022-283.</funding-statement><funding-statement xml:lang="en">His work was supported by the Moscow Center for Fundamental and Applied Mathematics under Agreement no. 075-15-2022-283 with the Ministry of Science and Higher Education of the Russian Federation.</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">TheLinuxFoundation. Linux Foundation Announces Intent to Form the High Performance Software Foundation URL: https://www.linuxfoundation.org/press/linux-foundation-announces-intent-to-form-high-performance-softwarefoundation-hpsf (дата обращения: 16.04.2024).</mixed-citation><mixed-citation xml:lang="en">TheLinuxFoundation. Linux Foundation Announces Intent to Form the High Performance Software Foundation. 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