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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">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-2430-2024-60-3-216-224</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-796</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>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>Численное решение смешанной краевой задачи для уравнения теплопроводности в двумерных областях сложной формы</article-title><trans-title-group xml:lang="en"><trans-title>Numerical solution of the mixed boundary value problem for the heat equation in two-dimensional domains of complex shape</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чуйко</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Chuiko</surname><given-names>M M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чуйко Михаил Матвеевич – кандидат физико-математических наук, ведущий научный сотрудник отдела вычислительной математики</p><p>ул. Сурганова, 11, 220072, Минск</p></bio><bio xml:lang="en"><p>Mikhail M. Chuiko – Ph. D. (Physics and Mathematics), Leading Researcher of the Department of Computational Mathematics</p><p>11, Surganov Str., 220072, Minsk</p></bio><email xlink:type="simple">amikhail.chuiko@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Королёва</surname><given-names>О. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Korolyova</surname><given-names>O. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Королёва Ольга Михайловна – кандидат физикоматематических наук, доцент кафедры высшей математики</p><p>пр. Независимости, 65, 220013, Минск</p></bio><bio xml:lang="en"><p>Olga M. Korolyova – Ph. D. (Physics and Mathematics), Associate Professor of the Department of Higher Mathematics</p><p>65, Nezalezhnosti Ave., 220013, Minsk</p></bio><email xlink:type="simple">korolyovaola@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Mathematics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусcкий национальный технический университет</institution></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>05</day><month>10</month><year>2024</year></pub-date><volume>60</volume><issue>3</issue><fpage>216</fpage><lpage>224</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чуйко М.М., Королёва О.М., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Чуйко М.М., Королёва О.М.</copyright-holder><copyright-holder xml:lang="en">Chuiko M.M., Korolyova O.M.</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://vestifm.belnauka.by/jour/article/view/796">https://vestifm.belnauka.by/jour/article/view/796</self-uri><abstract><p>Построен конечно-разностный вычислительный алгоритм решения смешанной краевой задачи для уравнения теплопроводности, заданной в двумерных областях сложной формы с использованием обобщенных криволинейных координат. Физическая область отображается в расчетную область (единичный квадрат) в пространстве обобщенных координат. Исходная задача записывается в обобщенных криволинейных координатах и аппроксимируется на равномерной сетке в расчетной области. Полученные результаты отображаются на неравномерную разностную сетку, построенную в физической области. Построены аппроксимации второго порядка смешанных краевых условий Неймана – Дирихле. Приведены результаты решения краевых задач в областях сложной формы, подтверждающие второй порядок точности вычислительного алгоритма.</p></abstract><trans-abstract xml:lang="en"><p>A finite-difference computational algorithm is proposed for solving a mixed boundary value problem for heat equation given in a two-dimensional domains of complex shape. To solve the problem, generalized curvilinear coordinates are used. The physical domain is mapped to the computational domain (unit square) in the space of generalized coordinates. The original problem is written in curvilinear coordinates and approximated on a uniform grid in the computational domain. The obtained results are mapped on a non-uniform boundary-fitted difference grid in the physical domain. The second-order approximations of mixed Neumann – Dirichlet boundary conditions are constructed. The results of computational experiments are presented. The second order of accuracy of the presented computational algorithm is confirmed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>обобщенные криволинейные координаты</kwd><kwd>смешанная краевая задача</kwd><kwd>конечно-разностные методы</kwd><kwd>разностные схемы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>generalized curvilinear coordinates</kwd><kwd>mixed boundary value problem</kwd><kwd>finite-difference methods</kwd><kwd>difference schemes</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ingram, D. M. Developments in cartesian cut cell methods / D. M. Ingram, D. M. Causon, C. G. Mingham // Math. Comput. Simul. – 2003. – Vol. 61, № 3–6. – P. 561–572. https://doi.org/10.1016/s0378-4754(02)00107-6</mixed-citation><mixed-citation xml:lang="en">Ingram D. M., Causon D. M., Mingham C. G. Developments in cartesian cut cell methods. 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