Application of two-sided approximations method to solution of first boundary value problem for one-dimensional nonlinear heat conductivity equation

dc.contributor.authorGybkina, N.
dc.contributor.authorSidorov, M.
dc.contributor.authorVasylyshyn, K.
dc.date.accessioned2022-04-18T14:59:24Z
dc.date.available2022-04-18T14:59:24Z
dc.date.issued2021
dc.description.abstractukThe first boundary value problem for a one-dimensional nonlinear heat equation is considered, where the heat conductivity coefficient and the power function of heat sources have a power-law dependence on temperature. For a numerical analysis of this problem, it is proposed to use the method of two-sided approximations based on the method of Green’s functions. After replacing the unknown function, the boundary value problem is reduced to the Hammerstein integral equation, which is considered as a nonlinear operator equation in a semi-ordered Banach space. The conditions for the existence of a single positive solution of the problem and the conditions for two-sided convergence of successive approximations to it are obtained. The developed method is programmatically implemented and researched in solving test problems. The results of the computational experiment are illustrated by graphical and tabular information. The conducted experiments confirmed the efficiency and effectiveness of the developed method that allowed recommending its practical use for solving problems of system analysis and mathematical modeling of nonlinear processes.uk
dc.format.pagerangeС. 115-127uk
dc.identifier.citationGybkina, N. Application of two-sided approximations method to solution of first boundary value problem for one-dimensional nonlinear heat conductivity equation / N. Gybkina, M. Sidorov, K. Vasylyshyn // Системні дослідження та інформаційні технології : міжнародний науково-технічний журнал. – 2021. – № 4. – С. 115-127. – Бібліогр.: 16 назв.uk
dc.identifier.doihttps://doi.org/10.20535/SRIT.2308-8893.2021.4.09
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/46920
dc.language.isoukuk
dc.publisherКПІ ім. Ігоря Сікорськогоuk
dc.publisher.placeКиївuk
dc.sourceСистемні дослідження та інформаційні технології : міжнародний науково-технічний журнал, № 4uk
dc.subjectnonlinear thermal conductivityuk
dc.subjectpositive solutionuk
dc.subjectGreen’s functionuk
dc.subjecttwo-sided iterative method,uk
dc.subjectequation with isotonic operatoruk
dc.subject.udc517.927.4 : 519.624.2uk
dc.titleApplication of two-sided approximations method to solution of first boundary value problem for one-dimensional nonlinear heat conductivity equationuk
dc.typeArticleuk

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