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JOURNALS // Itogi Nauki i Tekhniki. Sovremennaya Matematika i ee Prilozheniya. Tematicheskie Obzory // Archive

Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 2021 Volume 196, Pages 36–43 (Mi into847)

This article is cited in 1 paper

On solutions of the traveling wave type for the nonlinear heat equation

A. L. Kazakova, P. A. Kuznetsova, L. F. Spevakb

a Matrosov Institute for System Dynamics and Control Theory of Siberian Branch of Russian Academy of Sciences, Irkutsk
b Institute of Engineering Science, Urals Branch, Russian Academy of Sciences, Ekaterinburg

Abstract: In this paper, we consider the problem of finding solutions to a nonlinear heat equation with a power-law nonlinearity, which have the form of a traveling wave and simulate the propagation of disturbances along a cold background with a finite speed. We show that the construction can be reduced to the Cauchy problem for a second-order ordinary differential equation with a singular coefficient of the highest derivative. For this Cauchy problem, the theorem on the existence and uniqueness of a smooth solution is proved. We develop an algorithm for constructing an approximate solution based on the boundary-element method and also present the results of computational experiments with numerical estimates of the parameters of the solution.

Keywords: nonlinear heat equation, exact solution, existence theorem, uniqueness theorem, series, convergence, boundary-element method.

UDC: 517.95, 519.62

MSC: 35K65

DOI: 10.36535/0233-6723-2021-196-36-43



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© Steklov Math. Inst. of RAS, 2025