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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">intechngu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник НГУ. Серия: Информационные технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik NSU. Series: Information Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1818-7900</issn><issn pub-type="epub">2410-0420</issn><publisher><publisher-name>НГУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25205/1818-7900-2020-18-4-66-85</article-id><article-id custom-type="elpub" pub-id-type="custom">intechngu-139</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Моделирование 3D волновых полей в неоднородной области со сложной топографией при помощи схемы Лебедева</article-title><trans-title-group xml:lang="en"><trans-title>Simulation of 3D Wave Fields in Inhomogeneous Domain with Complex Topography Using the Lebedev Scheme</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>Титов</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Titov</surname><given-names>P. A.</given-names></name></name-alternatives><email xlink:type="simple">tapawel@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт вычислительной математики и математической геофизики СО РАН<country>Россия</country></aff><aff xml:lang="en">Institute of Computational Mathematics and Mathematical Geophysics SB RAS<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>24</day><month>05</month><year>2021</year></pub-date><volume>18</volume><issue>4</issue><fpage>66</fpage><lpage>85</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Титов П.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Титов П.А.</copyright-holder><copyright-holder xml:lang="en">Titov P.A.</copyright-holder><license 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://intechngu.elpub.ru/jour/article/view/139">https://intechngu.elpub.ru/jour/article/view/139</self-uri><abstract><p>Численное моделирование широко используется при изучении волновых полей в различных средах. Одним из способов моделирования является разбиение интересуемой области на элементарные объемы и построение конечно-разностной схемы для численной реализации. В работе предполагается, что среда может обладать существенной кривизной поверхности, поэтому задействуется технология построения сетки из криволинейных кубов. Такая сетка обеспечивает хорошую согласованность дискретной и физической моделей среды. Предложен параллельный алгоритм численного решения 3D линейной системы теории упругости, выраженной в скоростях смещений, с использованием криволинейной сетки и явной разностной схемы, созданной на основе схемы Лебедева. Представлены результаты моделирования для неоднородной области. Расчеты проводились с использованием ресурсов ССКЦ СО РАН.</p></abstract><trans-abstract xml:lang="en"><p>Numerical simulation is widely used in the study of wave fields in various media. One of the methods is to divide the domain of interest into elementary volumes and build a finite-difference scheme for numerical implementation. The work assumes that the domain can have a significant curvature of the surface, therefore, the technology of generating a mesh of curved cubes is used. This mesh provides good consistency between the discrete and physical models of the domain. A parallel algorithm is proposed for the numerical solution of a 3D linear system of elasticity theory, expressed via displacement velocities and stresses, using a curvilinear mesh and an explicit difference scheme based on the Lebedev scheme. The simulation results are presented. The calculations were carried out using the resources of the SSCC SB RAS.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>теория упругости</kwd><kwd>упругие волны</kwd><kwd>криволинейная поверхность</kwd><kwd>криволинейная сетка</kwd><kwd>суперкомпьютер</kwd><kwd>моделирование</kwd><kwd>схема Лебедева</kwd></kwd-group><kwd-group xml:lang="en"><kwd>theory of elasticity</kwd><kwd>elastic waves</kwd><kwd>curved surface</kwd><kwd>curved mesh</kwd><kwd>supercomputer</kwd><kwd>modeling</kwd><kwd>Lebedev's scheme</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">Liseikin V. D. Grid generation method. 2nd ed. Berlin, Springer, 2010. ISBN 978-90-481-2912-6</mixed-citation><mixed-citation xml:lang="en">Liseikin V. D. Grid generation method. 2nd ed. Berlin, Springer, 2010. 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