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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">dan-433</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>МОНОТОННЫЕ РАЗНОСТНЫЕ СХЕМЫ НА НЕРАВНОМЕРНЫХ СЕТКАХ ДЛЯ ДВУМЕРНОГО КВАЗИЛИНЕЙНОГО ПАРАБОЛИЧЕСКОГО УРАВНЕНИЯ КОНВЕКЦИИ–ДИФФУЗИИ</article-title><trans-title-group xml:lang="en"><trans-title>MONOTONE DIFFERENCE SCHEMES ON NON-UNIFORM GRIDS FOR 2D QUASI-LINEAR PARABOLIC CONVECTION–DIFFUSION EQUATION</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>Матус</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Matus</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р физ.-мат. наук, профессор</p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Mathematics), Professor</p></bio><email xlink:type="simple">matus@im.bas-net.by</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>Хиеу</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Hieu</surname><given-names>Le. Minh</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант</p></bio><bio xml:lang="en"><p>Postgraduate student</p></bio><email xlink:type="simple">lmhieuktdn@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; &#13;
Католический университет Люблина, Люблин, Польша</institution></aff><aff xml:lang="en"><institution>Institute of Mathematics of the National Academy of Sciences of Belarus;&#13;
John Paul II Catholic University of Lublin, Lublin, Poland</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>04</day><month>10</month><year>2017</year></pub-date><volume>61</volume><issue>4</issue><fpage>7</fpage><lpage>13</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Матус П.П., Хиеу Л.М., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Матус П.П., Хиеу Л.М.</copyright-holder><copyright-holder xml:lang="en">Matus P.P., Hieu L.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://doklady.belnauka.by/jour/article/view/433">https://doklady.belnauka.by/jour/article/view/433</self-uri><abstract><p>Настоящая работа посвящена построению монотонных разностных схем второго порядка локальной аппроксимации на неравномерных сетках по пространству для двумерного квазилинейного параболического уравнения конвекции–диффузии. Устанавливаются двусторонние оценки разностного решения и доказана важная априорная оценка в равномерной норме С.</p><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Abstract</title><p>Abstract. The present paper is devoted to the construction of monotone difference second-order schemes for local approximation on non-uniform grids in space for 2D quasi-linear parabolic convection–diffusion equation. Two-sided estimates of the difference solution are found and an important a priori estimate in a uniform norm C is proved.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>неравномерная сетка</kwd><kwd>принцип максимум</kwd><kwd>принцип регуляризации</kwd><kwd>монотонная разностная схема</kwd><kwd>уравнение конвекции–диффузии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>non-uniform grid</kwd><kwd>maximum principle</kwd><kwd>regularization principle</kwd><kwd>monotone difference scheme</kwd><kwd>convection-diffusion equation</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">Самарский, А. А. Теория разностных схем / А. А. Самарский. – М.: Наука, 1989. – 616 с.</mixed-citation><mixed-citation xml:lang="en">Samarskii A. A. Theory of difference schemes. Moscow, Nauka Publ., 1989. 616 р. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Самарский, А. А. Численные методы / А. А. Самарский, А. А. Гулин. – М.: Наука, 1989. – 432 с.</mixed-citation><mixed-citation xml:lang="en">Samarskii A. A., Gulin A. A. Numerical methods. Moscow, Nauka Publ., 1989. 432 р. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Фридман, А. Уравнения с частными производными параболического типа / А. Фридман. – М.: Мир, 1968. – 420 с.</mixed-citation><mixed-citation xml:lang="en">Fridman A. Partial Differential Equations of Parabolic Type. N. J., Prentice Hall, 1964. 347 p.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Матус, П. П. Монотонные разностные схемы для линейного параболического уравнения с граничными условиями смешанного типа / П. П. Матус, Во Тхи Ким Туен, Ф. Гаспар // Докл. Нац. акад. наук Беларуси. – 2014. – Т. 58, № 5. – С. 18–22.</mixed-citation><mixed-citation xml:lang="en">Matus P. P., Vo Thi Kim Tuyen, Gaspar F. Monotone difference schemes for linear parabolic equations with mixed boundary conditions. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2014, vol. 58, no. 5, pp. 18–22 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Разностные схемы на неравномерных сетках для уравнений математической физики с переменными коэффициентами / А. А. Самарский [и др.] // ЖВМ и МФ. – 2001. – Т. 41, № 3. – С. 407–419.</mixed-citation><mixed-citation xml:lang="en">Mazhukin V. I., Malaphei D. A., Matus P. P., Samarskii A. A. Difference schemes on irregular grids for equations of mathematical physics with variable coefﬁcients. Computational mathematics and mathematical physics, 2001, vol. 41, no. 3, pp. 379–391.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Малафей, Д. А. Экономичные монотонные разностные схемы для многомерных задач конвеции–диффузии на неравномерных сетках / Д. А. Малафей // Докл. Нац. акад. наук Беларуси. – 2000. – Т. 44, № 4. – С. 21–25.</mixed-citation><mixed-citation xml:lang="en">Malaphei D. A. Economical monotone difference schemes for multidimensional problem of convection diffusion on nonuniform grids. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2000, vol. 44, no. 4, pp. 21–25 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Матус, П. П. Принцип максимума для разностных схем с непостоянными входными данными / П. П. Матус, Л. М. Хиеу, Л. Г. Волков // Докл. Нац. акад. наук Беларуси. – 2015. – Т. 59, № 5. – С. 13–17.</mixed-citation><mixed-citation xml:lang="en">Matus P. P., Hieu L. M., Vulkov L. G. Maximum principle for ﬁnite-difference schemes with non sigh-constant input data. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2015, vol. 59, no. 5, pp. 13–17 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Samarskii, A. Difference schemes with operator factors / A. Samarskii, P. Vabishchevich, P. Matus. – Boston; Dordrecht; London: Kluwer Academic Publishers, 2002. – 384 р. doi.org/10.1007/978-94-015-9874-3</mixed-citation><mixed-citation xml:lang="en">Samarskii A., Vabishchevich P., Matus P. Difference schemes with operator factors. Boston, Dordrecht, London, Kluwer Academic Publishers, 2002. 384 p. doi.org/10.1007/978-94-015-9874-3</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
