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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">mateltech</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Материалы электронной техники</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1609-3577</issn><issn pub-type="epub">2413-6387</issn><publisher><publisher-name>MISIS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/1609-3577-2018-3-175-181</article-id><article-id custom-type="elpub" pub-id-type="custom">mateltech-333</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>Наноматериалы и нанотехнологии</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>NANOMATERIALS AND NANOTECHNOLOGY</subject></subj-group></article-categories><title-group><article-title>Расчет теплопереноса в наноразмерных гетероструктурах</article-title><trans-title-group xml:lang="en"><trans-title>Calculation of heat transfer in nanoscale heterostructures</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>Абгарян</surname><given-names>К. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Abgarian</surname><given-names>K. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Абгарян Каринэ Карленовна — канд. физ.-мат. наук, зав. отделом (1), зав. кафедрой (2)</p><p>ул. Вавилова, д. 40, Москва, 119333, Россия;Волоколамское шоссе, д. 4, Москва, 125993, Россия</p></bio><bio xml:lang="en"><p>Karine K. Abgarian: Cand. Sci. (Phys.−Math.), Head of the Department (1,2) </p><p>40 Vavilov Str., Moscow 119333, Russia;4 Volokolamskoe Shosse, Moscow 125993, Russia</p></bio><email xlink:type="simple">kristal83@mail.ru</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>Колбин</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolbin</surname><given-names>I. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Колбин Илья Сергеевич — канд. физ.-мат. наук, научный сотрудник</p><p>ул. Вавилова, д. 40, Москва, 119333, Россия</p></bio><bio xml:lang="en"><p>Ilya S. Kolbin: Cand. Sci. (Phys.−Math.), Researcher</p><p>40 Vavilov Str., Moscow 119333, Russia</p></bio><email xlink:type="simple">iskolbin@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Вычислительный центр им. А. А. Дородницына Федерального исследовательского центра «Информатика и управление» РАН;&#13;
Московский авиационный институт (национальный исследовательский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Dorodnicyn Computing Centre, Federal Research Center «Computer Science and Control» of Russian Academy of Sciences;&#13;
Moscow Aviation Institute (National Research University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Вычислительный центр им. А. А. Дородницына Федерального исследовательского центра «Информатика и управление» РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Dorodnicyn Computing Centre, Federal Research Center «Computer Science and Control» of Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>31</day><month>10</month><year>2019</year></pub-date><volume>21</volume><issue>3</issue><fpage>175</fpage><lpage>181</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Абгарян К.К., Колбин И.С., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Абгарян К.К., Колбин И.С.</copyright-holder><copyright-holder xml:lang="en">Abgarian K.K., Kolbin I.S.</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://met.misis.ru/jour/article/view/333">https://met.misis.ru/jour/article/view/333</self-uri><abstract><p>Аннотация. Проведен расчет температурного режима в наноразмерных бинарных гетероструктурах AlAs/ GaAs. При моделировании теплопереноса в нанокомпозитах важно учитывать, что рассеивание тепла в многослойных структурах при размерах слоев порядка длины свободного пробега носителей энергии (фононов и электронов) происходит не на кристаллической решетке, а на границах слоев (интерфейсах). Поэтому использование классических численных моделей, основанных на законе Фурье, сильно ограничено, так как дает существенные погрешности. Для получения более точных результатов. Использована модель, в которой распределение тепла предполагалось постоянным внутри слоя, при этом температура ступенчато изменялась на интерфейсах слоев. Для вычисления использован гибридный подход: конечно−разностный метод с неявной схемой для временной аппроксимации и бессеточная модель на основе набора радиально− базисных функций для пространственной аппроксимации. Расчет параметров базисов проведен через решение системы линейных алгебраических уравнений. При этом подбирали только весовые коэффициенты нейроэлементов, а центры и «ширины» были фиксированы. В качестве аппроксиматоров рассмотрен набор часто используемых базисных функций. Для увеличения скорости вычислений выполнена параллелизация алгоритма. Проведены замеры времени счета для оценки прироста производительности при использовании параллельной реализации метода.</p></abstract><trans-abstract xml:lang="en"><p>Abstract. The article discusses the calculation of the temperature regime in nanoscale AlAs/GaAs binary heterostructures. When modeling heat transfer in nanocomposites, it is important to take into account that heat dissipation in multilayer structures with layer sizes of the order of the mean free path of energy carriers (phonons and electrons) occurs not at the lattice, but at the layer boundaries (interfaces). In this regard, the use of classical numerical models based on the Fourier law is limited, because it gives significant errors. To obtain more accurate results, we used a model in which the heat distribution was assumed to be constant inside the layer, while the temperature was stepwise changed at the interfaces of the layers. A hybrid approach was used for the calculation: a finite−difference method with an implicit scheme for time approximation and a mesh−free model based on a set of radial basis functions for spatial approximation. The calculation of the parameters of the bases was carried out through the solution of the systems of linear algebraic equations. In this case, only weights of neuroelements were selected, and the centers and «widths» were fixed. As an approximator, a set of frequently used basic functions was considered. To increase the speed of calculations, the algorithm was parallelized. Calculation times were measured to estimate the performance gains using the parallel implementation of the method.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>численное моделирование</kwd><kwd>теплоперенос</kwd><kwd>наноразмерные гетероструктуры</kwd><kwd>интерфейс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>numerical simulation</kwd><kwd>heat transfer</kwd><kwd>nanoscale heterostructures</kwd><kwd>interface</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">Njuguna J., Pielichowski K. Polymer nanocomposites for aerospace applications: properties // Adv. Eng. Mater. 2003. V. 5, Iss. 11. P. 769—778. DOI: 10.1002/adem.200310101</mixed-citation><mixed-citation xml:lang="en">Njuguna J., Pielichowski K. Polymer nanocomposites for aerospace applications: properties. Adv. Eng. Mater., 2003, vol. 5, no. 11, pp. 769—778. 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