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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">nuc</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник НЯЦ РК</journal-title><trans-title-group xml:lang="en"><trans-title>NNC RK Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-7516</issn><issn pub-type="epub">1729-7885</issn><publisher><publisher-name>Национальный ядерный центр Республики Казахстан</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52676/1729-7885-2026-2-167-175</article-id><article-id custom-type="elpub" pub-id-type="custom">nuc-1034</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 ТЕПЛОВОГО СОСТОЯНИЯ КРИСТАЛЛИЗАТОРА УСТАНОВКИ ЭЛЕКТРОШЛАКОВОГО ПЕРЕПЛАВА ПОСЛЕ ОБРАЗОВАНИЯ РАСПЛАВА МЕТАЛЛА.</article-title><trans-title-group xml:lang="en"><trans-title>MODELING OF THE THERMAL STATE OF THE CRYSTALLIZER OF AN ELECTROSLAG REMELTING UNIT AFTER THE FORMATION OF THE METAL MELT</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3541-2569</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Қабдылқақов</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kabdylkakov</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ержан Асқарүлы Қабдылқақов – магистр физики</p><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">kabdylkakov@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5250-2852</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сураев</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Suraev</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артур Сергеевич Сураев </p><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">suraev@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-9109-7767</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Должиков</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dolzhikov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Александрович Должиков </p><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">Dolzhikov@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6672-180X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мухамедов</surname><given-names>Н. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Mukhamedov</surname><given-names>N. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нуржан Еролович Мухамедов </p><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">mukhamedov@nnc.kz</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>Пахниц</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pakhnits</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Владимировчи Пахниц </p><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">pav@nnc.kz</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>Күздеубай</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzdeubay</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Айша Ардаққызы Күздеубай </p><p>Курчатов</p><p> </p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">kuzdeubay@nnc.kz</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>Жеңіс</surname><given-names>Д. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhenis</surname><given-names>D. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дана Тоқтасынқызы Жеңіс </p><p>Курчатов</p></bio><bio xml:lang="en"><p>Kurchatov</p></bio><email xlink:type="simple">zhengis@nnc.kz</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Филиал «Институт атомной энергии» РГП НЯЦ РК</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>Institute of Atomic Energy Branch of the RSE “National Nuclear Center of the Republic of Kazakhstan</institution><country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>09</day><month>08</month><year>2026</year></pub-date><volume>0</volume><issue>2</issue><fpage>167</fpage><lpage>175</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Қабдылқақов Е.А., Сураев А.С., Должиков С.А., Мухамедов Н.Е., Пахниц А.В., Күздеубай А.А., Жеңіс Д.Т., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Қабдылқақов Е.А., Сураев А.С., Должиков С.А., Мухамедов Н.Е., Пахниц А.В., Күздеубай А.А., Жеңіс Д.Т.</copyright-holder><copyright-holder xml:lang="en">Kabdylkakov E.A., Suraev A.S., Dolzhikov S.A., Mukhamedov N.E., Pakhnits A.V., Kuzdeubay A.A., Zhenis D.T.</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://journals.nnc.kz/jour/article/view/1034">https://journals.nnc.kz/jour/article/view/1034</self-uri><abstract><p>Переработка и очистка металлических радиоактивных отходов является одной из актуальных задач использования ядерной энергетики. Одним из методов переработки и очистки металлических отходов является метод электрошлакового переплава. В данной работе обсуждается моделирование теплофизического состояния кристаллизатора установки электрошлакового переплава с использованием программы ANSYS FLUENT. Проведено построение геометрической и расчетной модели, выполнен расчет теплофизического состояния кристаллизатора в условиях проведенных ранее пусков. Результаты расчета демонстрирует тепловое состояние кристаллизатора в условиях остывания образовавшегося в нем металлического расплава. Результаты расчетов демонстрируют физическую состоятельность принятых граничных условий и параметров теплообмена.</p></abstract><trans-abstract xml:lang="en"><p>The processing and decontamination of metallic radioactive waste is one of the pressing challenges associated with the utilization of nuclear energy. One of the methods used for the treatment and purification of metallic waste is electroslag remelting. This paper discusses the modeling of the thermophysical state of the crystallizer in an electroslag remelting facility using the ANSYS FLUENT software package. A geometric model and a computational model were developed, and calculations of the crystallizer thermophysical behavior were performed under conditions corresponding to previously conducted experimental runs. The simulation results illustrate the thermal behavior of the crystallizer during the cooling of the metallic melt formed within it. The obtained results confirm the physical consistency of the adopted boundary conditions and heat transfer parameters.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>твердые радиоактивные отходы</kwd><kwd>электрошлаковый переплав</kwd><kwd>тепловое состояние</kwd><kwd>моделирование</kwd><kwd>ANSYS FLUENT</kwd><kwd>кристаллизатор</kwd></kwd-group><kwd-group xml:lang="en"><kwd>solid radioactive waste</kwd><kwd>electroslag remelting (ESR)</kwd><kwd>thermal state</kwd><kwd>numerical simulation</kwd><kwd>ANSYS FLUENT</kwd><kwd>crystallizer</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа проведена в рамках проекта программно-целевого финансирования BR24993118 «НИР по обоснованию выбора и реализации технологии переработки твердых радиоактивных отходов».</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">Амано Ю. и др. 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