<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Discrete and Continuous Models and Applied Computational Science</journal-id><journal-title-group><journal-title xml:lang="en">Discrete and Continuous Models and Applied Computational Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Discrete and Continuous Models and Applied Computational Science</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4670</issn><issn publication-format="electronic">2658-7149</issn><publisher><publisher-name xml:lang="en">Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">40105</article-id><article-id pub-id-type="doi">10.22363/2658-4670-2024-32-1-112-121</article-id><article-id pub-id-type="edn">BSGQHY</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The numerical solution of the nonlinear hyperbolic-parabolic heat equation</article-title><trans-title-group xml:lang="ru"><trans-title>Численное решение нелинейного гиперболо-параболического уравнения теплопроводности</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6840-8270</contrib-id><contrib-id contrib-id-type="scopus">6504419222</contrib-id><contrib-id contrib-id-type="researcherid">HKV-0681-2023</contrib-id><name-alternatives><name xml:lang="en"><surname>Khankhasaev</surname><given-names>Vladislav N.</given-names></name><name xml:lang="ru"><surname>Ханхасаев</surname><given-names>В. Н.</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Physical and Mathematical Sciences, assistant professor of Department of ”Mathematics named after Ts.B. Shoynzhurov” of East Siberia State University of Technology and Management, assistant professor of Department of Fundamental Mathematics of Buryat State University</p></bio><email>hanhvladnick@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-6638-5073</contrib-id><name-alternatives><name xml:lang="en"><surname>Bairov</surname><given-names>Safron A.</given-names></name><name xml:lang="ru"><surname>Баиров</surname><given-names>С. А.</given-names></name></name-alternatives><bio xml:lang="en"><p>Postgraduate student of Department of ”Mathematics named after Ts.B. Shoynzhurov” of East Siberia State University of Technology and Management</p></bio><email>bairov.sofron@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">East Siberia State University of Technology and Management</institution></aff><aff><institution xml:lang="ru">Восточно-Сибирский государственный университет технологий и управления</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Buryat State University</institution></aff><aff><institution xml:lang="ru">Бурятский государственный университет имени Доржи Банзарова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2024</year></pub-date><volume>32</volume><issue>1</issue><issue-title xml:lang="en">VOL 32, NO1 (2024)</issue-title><issue-title xml:lang="ru">ТОМ 32, №1 (2024)</issue-title><fpage>112</fpage><lpage>121</lpage><history><date date-type="received" iso-8601-date="2024-07-19"><day>19</day><month>07</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Khankhasaev V.N., Bairov S.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Ханхасаев В.Н., Баиров С.А.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Khankhasaev V.N., Bairov S.A.</copyright-holder><copyright-holder xml:lang="ru">Ханхасаев В.Н., Баиров С.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/miph/article/view/40105">https://journals.rudn.ru/miph/article/view/40105</self-uri><abstract xml:lang="en"><p>The article discusses a mathematical model and a finite-difference scheme for the heating process of an infinite plate. The disadvantages of using the classical parabolic heat equation for this case and the rationale for using the hyperbolic heat equation are given. The relationship between the hyperbolic thermal conductivity equation and the theory of equations with the retarded argument (delay equation) is shown. The considered mixed equation has 2 parts: parabolic and hyperbolic. Difference schemes use an integrointerpolation method to reduce errors. The problem with a nonlinear thermal conductivity coefficient was chosen as the initial boundary-value problem. The heat source in the parabolic part of the equation is equal to 0, and in the hyperbolic part of the equation sharp heating begins. The initial boundary-value problem with boundary conditions of the third kind in an infinite plate with nonlinear coefficients is formulated and numerically solved. An iterative method for solving the problem is described. A visual graph of the solution results is presented. A theoretical justification for the difference scheme is given. Also we consider the case of the nonlinear mixed equation of the fourth order.</p></abstract><trans-abstract xml:lang="ru"><p>В статье рассматривается математическая модель и конечно-разностная схема процесса нагрева бесконечной пластины. Приводятся недостатки использования классического параболического уравнения теплопроводности для данного случая и обоснования для использования смешанного уравнения. Показана связь гиперболического уравнения теплопроводности с теорией уравнений с запаздывающим аргументом (уравнением с запаздыванием). В смешанном уравнении присутствуют 2 части: параболическая и гиперболическая. В разностных схемах применяется интегро-интерполяционный метод для уменьшения погрешностей. В качестве краевой задачи выбрана задача с нелинейным коэфффициентом теплопроводности. Источник тепла в параболической части уравнения равен 0, а в гиперболической части уравнения начинается резкий нагрев. Поставлена и численно решена начально-краевая задача с краевыми условиями третьего рода в бесконечной пластине с линейными и с нелинейными коэффициентами. Описан итерационный метод для решения задачи. Представлен наглядный график результатов решения. Дано теоретическое обоснование для разностной схемы. Также рассмотрен случай нелинейного смешанного уравнения четвертого порядка.</p></trans-abstract><kwd-group xml:lang="en"><kwd>hyperbolic-parabolic equation</kwd><kwd>delay equations</kwd><kwd>initial boundary-value problem</kwd><kwd>finite difference schemes</kwd><kwd>equations of the high order</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гиперболо-параболическое уравнение</kwd><kwd>уравнения с запаздыванием</kwd><kwd>начально-краевая задача</kwd><kwd>конечно-разностные схемы</kwd><kwd>уравнения высокого порядка</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The work was carried out with the financial support of the Russian Science Foundation grant No. 23-21-00269, https://rscf.ru/project/23-21-00269.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Buyantuyev, S. &amp; Khankhasaev, V. About one generalization of Navier-Stokes equation in mathematical models an electric arc. Russian. Elektrichestvo ISSN: 0013-5380 eISSN: 2411-1333 (1996).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Khankhasaev, V. &amp; Buyantuyev, S. The numerical computation of one mathematical model of electric arc in the gas flow. Russian. Proceedings of International Conference “Energy Conserving and Nature Protecting Technologies for the Baikal Lake Territory” (2001).</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Khankhasaev, V. &amp; Darmakheev, E. V. On certain applications of the hyperbolic heat transfer equation and methods for its solution. Russian. Mathematical Notes NEFU. doi:10.25587/SVFU.2018.1.12772 (2018).</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Shashkov, A. G., Bubnov, V. A. &amp; Yanovskiy, S. Y. Wave phenomena of thermal conductivity. System-structural approach 298 pp. (URSS, Moscow, 2004).</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Maxwell, J. On the Dynamic theory of gases. Philosophical Transactions 157 (1867).</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Cattaneo, C. Sulla conduzione de calore. Atti del seminario matematico e fisiko dell’Universita di Modena. 3 (1948).</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Vernotte, P. Les paradoxes de la theorie continue de l’equation de la chauleur. Compt. Rendus. 246 (1958).</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Bubnov, V. Molecular-kinetics basis for the heat-transfer equation. Russian. Journal of engineering physics 28 (1975).</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Sobolev, S. Local non-equilibrium transport models. Russian. Successes of Physical Sciences 167 (1997).</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Formalev, V., Selin, I. &amp; Kuznetsova, E. Appearance and distribution of heat waves in the nonlinear anisotropic space. Russian. Izvestiya of Russian Academy of Sciences. Ser. “Energy Problems” (2010).</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Pimenov, V. G. &amp; Lozhnikov, A. B. Numerical method for modeling controlled heat conduction equation with delay. Russian. Bulletin of Russian Universities. Mathematics. 18 (2013).</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Khankhasaev, V., Mizhidon, G. &amp; Kozhanov, A. I. On the connection between some heat and mass transfer models and the theory of equations with the relarded argument. Russian. Proceedings of the VII International Conference “Mathematics, its Applications and Education in Mathematics” ISBN 978-5-907331-29-7 (2020).</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Petrova, L. Mathematical modeling of heating processes of piecewise homogeneous bodies taking into account the relaxation of heat flow. Russian. Bulletin of Eurasian Science 9 (2017).</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Scharf, G. Approach to steady state in the heat equation and the hyperbolic heat transfer equation. Internet journal “arXiv” (2018).</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Voskoboinikov, Y. E. &amp; et al. Solving engineering problems in MathCAD package 190 pp. (State architecture-builds University (Sibstrin), Novosibirsk, 2013).</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Kuznetsov, G. V. &amp; Sheremet, M. A. Difference methods for solving heat conduction problems Russian. 172 pp. (2007).</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Khankhasaev, V. N. &amp; Bairov, S. A. Solution of a mixed equation nonlinear with respect to the thermal conductivity coefficient by the integro-interpolation method with the third boundary condition. Russian. Mathematics, its applications and mathematical education (MAME23): Proceedings of the VIII International Conference. doi:10.53980/9785907599970 (2023).</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Dulnev, G. D., Parfenov, V. G. &amp; Sigalov, A. V. Application of computers to solve heat transfer problems Russian. 207 pp. (High School, Moscow, 1990).</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Terehov, A. N. Boundary value problem for a mixed type equation. Russian. Collection “Application of methods of functional analysis to problems in mathematics. physical and calc. math (1979).</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Khankhasaev, V. &amp; Mestnikova, N. An algorithm of numerical solving of heat transfer hyperbolic-parabolic equation one-dimensional with respect to the space variable in the environment of Mathcad 15. Russian. Proceedings of the International conference “Nano-materials and Technologies- 5 (2014).</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>Khankhasaev, V. On the theory of nonlinear equations of mixed type of the fourth order. Russian. Application of functional analysis methods to non-classical equations of mathematical physics (1988).</mixed-citation></ref></ref-list></back></article>
