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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">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2016-2-82-87</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-801</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>МЕТАЛЛУРГИЧЕСКИЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METALLURGICAL TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>ПРИМЕНЕНИЕ НЕРАВНОМЕРНЫХ РАСЧЕТНЫХ СЕТОК ДЛЯ МАТЕМАТИЧЕСКОГО МОДЕЛИРОВАНИЯ ПРОЦЕССОВ ФОРМИРОВАНИЯ НЕПРЕРЫВНОЛИТОЙ ЗАГОТОВКИ В КРИСТАЛЛИЗАТОРЕ МНЛЗ</article-title><trans-title-group xml:lang="en"><trans-title>USAGE OF UNEVEN ESTIMATED NETS FOR MATHEMATICAL MODELING OF THE PROCESSES OF CONTINUOUS CAST BILLET FORMATION IN A CCM CRYSTALLIZER</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>Федосов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedosov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры теории и компьютеризации литейного производства</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair of Technology and Computerization of Foundry</p></bio><email xlink:type="simple">fedosov-sol@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Приазовский государственный технический университет (87500, Украина, г. Мариуполь, ул. Университетская, 7)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Azov State Technical University, Mariupol, Ukraine</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>10</day><month>03</month><year>2016</year></pub-date><volume>59</volume><issue>2</issue><fpage>82</fpage><lpage>87</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Федосов А.В., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Федосов А.В.</copyright-holder><copyright-holder xml:lang="en">Fedosov A.V.</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://fermet.misis.ru/jour/article/view/801">https://fermet.misis.ru/jour/article/view/801</self-uri><abstract><p>Предложен дискретный аналог дифференциального уравнения теплопроводности, позволяющий использовать неравномерные расчетные сетки для моделирования процесса непрерывной разливки. Такой способ задания сетки позволяет учесть распределение температурных градиентов в теле модели, что повышает точность аппроксимации и адекватность результатов расчета. Разработана математическая модель процессов кристаллизации и усадки непрерывнолитого сляба в кристаллизаторе МНЛЗ. Применение неравномерной расчетной сетки позволило при моделировании использовать элементы с размером порядка 1-2 мм. На основе этой модели проведены исследования по искажению профиля поперечного сечения сляба под воздействием стенок кристаллизатора. Расчет геометрического профиля позволяет уточнить условия теплового и механического взаимодействия затвердевающей корочки со стенками кристаллизатора и решить задачу на определение величин рациональной конусности кристаллизаторов МНЛЗ, обеспечивающих уменьшение пораженности заготовок поверхностными и подповерхностными трещинами.</p></abstract><trans-abstract xml:lang="en"><p>The discrete analog of diff erential equation of heat conduction allowing applying irregular computational net for the mathematical modeling of continuous casting was proposed. This method of meshing allows taking into account the distribution of temperature gradients in the model. It improves accuracy of the approximation and adequacy of the computation results. The mathematical model of crystallization and shrinkage of slab in CCM mold was developed. Application of irre gular computational net allowed using the elements of size of 1 – 2 mm in modeling. The researches of slab cross-section profi le distortion under the influence of the mold were conducted on the basis of this model. Calculation of the geometrical profi le allows to specify the conditions of the thermal and mechanical interaction of the solidified shell with the mold walls and to solve the task of determination of optimal mold taper of CCM, ensuring reduction in number of slabs aff ected by surface and subsurface cracks.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метод конечных разностей</kwd><kwd>дифференциальное уравнение</kwd><kwd>дискретный аналог</kwd><kwd>непрерывнолитой слиток</kwd><kwd>кристаллизатор</kwd><kwd>конусность</kwd><kwd>тепловой поток</kwd><kwd>коэффициент теплоотдачи</kwd><kwd>усадка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>finite-difference method</kwd><kwd>differential equation</kwd><kwd>discrete analog</kwd><kwd>continuously cast ingot</kwd><kwd>crystallizer</kwd><kwd>conicity</kwd><kwd>heat fl ow</kwd><kwd>heat transfer coeffi cient</kwd><kwd>shrinkage</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">Смирнов А.Н., Куберский С.В., Штепан Е.В. 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