We propose a method for the construction of exact solutions to nonlinear heat equation based on the classical method of separation of variables, its generalization, and the Lie reduction method. We consider substitutions reducing the nonlinear heat equation to ordinary differential equations and construct the classes of exact solutions by the method of generalized separation of variables.
Similar content being viewed by others
References
L. V. Ovsyannikov, “Group properties of nonlinear heat-conduction equations,” Dokl. Akad. Nauk SSSR, 125, No. 3, 492–495 (1959).
A. D. Polyanin and V. F. Zaitsev, Handbook of Nonlinear Partial Differential Equations, Chapman & Hall/CRC, Boca Raton (2004).
Ya. B. Zeldovich and A. S. Kompaneets, “On the theory of propagation of heat for the temperature-dependent heat conduction,” in: Collection of Works Dedicated to the 70th Birthday of A. F. Ioffe [in Russian], Izv. Akad. Nauk SSSR (1950), pp. 61–71.
G. I. Barenblat, “On some unsteady motions of liquid and gas in porous media,” Prikl. Mat. Mekh., 16, No. 1, 67–78 (1952).
A. A. Samarskii, V. A. Galaktionov, S. P. Kurdyumov, and A. P. Mikhailov, Modes with Peaking in Problems for Quasilinear Parabolic Equations [in Russian], Nauka, Moscow (1987).
G. A. Rudykh and É. I. Semenov, “On new exact solutions of the one-dimensional nonlinear diffusion equation with a source (sink),” Zh. Vychisl. Mat. Mat. Fiz., 38, No. 6, 971–977 (1998).
D. Zwillinger, Handbook of Differential Equations, Academic Press, San Diego, Boston (1989).
S. N. Aristov, “Periodic and localized exact solutions of the equation ht = ∆ln h,” Prikl. Mekh. Tekh. Fiz., 40, No. 1, 22–26 (1999).
G.W. Bluman and S. Kumei, “On the remarkable nonlinear diffusion equation [a(u+b)−2ux]x−ut = 0,” J. Math. Phys., 21, No. 5, 1019–1023 (1980).
N. Kh. Ibragimov, Groups of Transformations in Mathematical Physics [in Russian], Nauka, Moscow (1983).
N. H. Ibragimov (editor), CRC Handbook of the Lie Group to Differential Equations, Vol. 1. Symmetries, Exact Solutions and Conservation Laws, CRC Press, Boca Raton (1994).
I. Sh. Akhatov, R. K. Gazizov, and N. Kh. Ibragimov, “Nonlocal symmetries. Heuristic approach,” in: VINITI Series in Contemporary Problems of Mathematics [in Russian], Vol. 34, VINITI, Akad. Nauk SSSR (1989), pp. 3–83.
G. R. Philip, “General method of exact solutions of the concentration-dependent diffusion equation,” Austral. J. Phys., 13, No. 1, 13–20 (1960).
P. W. Doyle and P. Vassiliou, “Separation of variables for the 1-dimensional nonlinear diffusion equation,” Int. J. Non-Lin. Mech., 33, No. 2, 315–326 (1998).
A. D. Polyanin and A. I. Zhurov, “Separation of variables in PDEs using nonlinear transformations: applications to reaction-diffusion type equations,” Appl. Math. Lett., 100, 106055 (2020).
A. D. Polyanin, “Functional separable solutions of nonlinear convection-diffusion equations with variable coefficients,” Comm. Nonlin. Sci. Numer. Simul., 73, 379–390 (2019).
W. Fushchych, “Ansatz’95,” J. Nonlin. Math. Phys., 2, No. 3-4, 216–235 (1995).
R. Z. Zhdanov and V. I. Lahno, “Conditional symmetry of a porous medium equation,” Phys. D, 122, 178–186 (1998).
M. Kunzinger and R. O. Popovych, “Singular reduction operators in two dimensions,” J. Phys. A, 41, 505201 (2008); Preprint arXiv:0808.3577 (2008).
V. M. Boyko, M. Kunzinger, and R. O. Popovych, “Singular reduction modules of differential equations,” J. Math. Phys., 57, 101503 (2016); Preprint arXiv:1201.3223.
A. F. Barannyk, T. A. Barannyk, and I. I. Yuryk, “Separation of variables for nonlinear equations of hyperbolic and Korteweg–de Vries type,” Rep. Math. Phys., 68, No. 1, 92–105 (2011).
A. F. Barannyk, T. A. Barannyk, and I. I. Yuryk, “Generalized separation of variables for nonlinear equation \( {u}_{tt}=F(u){u}_{xx}+{aF}^{\prime }(u){u}_x^2 \),” Rep. Math. Phys., 71, No. 1, 1–13 (2013).
A. F. Barannyk, T. A. Barannyk, and I. I. Yuryk, “A method for the construction of exact solutions to the nonlinear heat equation ut = (F(u)ux)x + G(u)ux + H(u),” Ukr. Mat. Zh., 71, No. 11, 1443–1454 (2019); English translation: Ukr. Math. J., 71, No. 11, 1651–1663 (2020).
G. M. Fikhtengol’ts, A Course in Differential and Integral Calculus [in Russian], Vol. 2, Fizmatgiz, Moscow (1959).
A. G. Nikitin and T. A. Barannyk, “Solitary wave and other solutions for nonlinear heat equations,” Cent. Eur. J. Math., 2, No. 5, 840–858 (2004).
R. O. Popovych, O. O. Vaneeva, and N. M. Ivanova, “Potential nonclassical symmetries and solutions of fast diffusion equation,” Phys. Lett. A, 362, 166–173 (2007); Preprint arXiv:math-ph/0506067.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 74, No. 3, pp. 294–310, March, 2022. Ukrainian DOI: https://doi.org/10.37863/umzh.v74i3.6667.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Barannyk, A.F., Barannyk, T.A. & Yuryk, I.I. Exact Solutions with Generalized Separation of Variables in the Nonlinear Heat Equation. Ukr Math J 74, 330–349 (2022). https://doi.org/10.1007/s11253-022-02066-6
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11253-022-02066-6