Article
Article name On Solving Problems of Thermal Conductivity on an Anisotropic Plane with a Weakly Permeable Film
Authors Kholodovsky S.Y. Doctor of Physics and Mathematics, hol47@yandex.ru
Orlov A.O. , Orlov_A_O@mail.ru
Bibliographic description Kholodovskii S. Уе.; Orlov A. O. On Solving Problems of Thermal Conductivity on an Anisotropic Plane with a Weakly Permeable Film // Scholarly Notes of Transbaikal State University. 2021. Vol. 15, No. 3. PP. 115-121. DOI: 10.21209/2658-7114-2021-16-3-115-121.
Section PROBLEMS OF MATHEMATICAL PHYSICS. ANALYTICAL METHODS
UDK 530: 517.956
DOI 10.21209/2658-7114-2021-16-3-115-121
Article type
Annotation The problem of thermal conductivity on an anisotropic plane (x,y) divided into two halfplanes < x < 0, y G R) and D2(0 < x < те, y G R) by a weakly permeable film x = 0 is considered at given heat sources and a given initial temperature. The anisotropy ellipses are arbitrary (in magnitude and direction) and are the same at all points of the plane. Using the method of convolution of Fourier expansions, the solution of the problem is expressed in single quadratures through the well-known solution of the classical Cauchy problem on an isotropic plane without a film. The results obtained are of practical interest in the problems of heat propagation and conservation in materials with anisotropic properties (crystalline, fibrous materials), in the presence of a thermal insulation film.
Key words boundary value problems of thermal conductivity, weakly permeable film, the method of convolution of Fourier expansions
Article information
References 1. Kholodovskii, S. E. Mathematical foundations of heat and mass transfer in complex environments. Chita: ZabGGPU, 2012. (In Rus.) 2. Kholodovskii, S. E. Effective permeability tensor of highly heterogeneous media. Engineering Physics Journal BAN and RAS, no. 1, pp. 18-22, 1992. (In Rus.) 3. Arsenin, V. Ya. Methods of mathematical physics and special functions. M: Nauka, 1974. (In Rus.) 4. Kholodovsky, S. E. Method of convolution of fourier expansions as applied to solving boundary value problems with intersecting interface lines. Computational mathematics and mathematical physics, no. 9, pp. 1489-1495, 2007. (In Engl.) 5. Fikhtengolts, G. M. Differential and integral calculus course. Vol. 3. M: Nauka, 1962. (In Rus.) 6. Vasiliev, B. A. Plane stationary problem of the theory of heat conduction for a composite wedge-shaped region. Differential Equations, no. 3, pp. 530-533, 1984. (In Rus.) 7. Kholodovskii, S. E. The convolution method of fourier expansions. The case of generalized transmission conditions of crack (screen) type in piecewise inhomogeneous media. Differential equations, no. 6, pp. 873-877, 2009. (In Engl.) 8. Kholodovsky, S. E. The convolution method of fourier expansions. The case of a crack (screen) in an inhomogeneous space. Differential equations, no. 8, pp. 1229-1233, 2009. (In Engl.) 9. Vlasov, P. A., Volkov, I. K. Temperature field of a half-space, the movable boundary of which with a thermally thin coating is under the influence of an external heat flux. Science and Education MSTU, no. 11, p. 257-266, 2014. (In Rus.) 10. Carslow, G., Jaeger, D. Thermal conductivity of solids. M: Science, 1964. (In Rus.)
Full articleOn Solving Problems of Thermal Conductivity on an Anisotropic Plane with a Weakly Permeable Film