SOLVABILITY OF HOMOGENIZED PROBLEMS WITH CONVOLUTIONS FOR WEAKLY POROUS MEDIA

  • G. V. Sandrakov Faculty of Computer Science and Cybernetics, Taras Shevchenko Kiev National University, Kiev, Ukraine
  • A. L. Hulianytskyi Faculty of Computer Science and Cybernetics, Taras Shevchenko Kiev National University, Kiev, Ukraine
Keywords: initial-boundary problems, problems with convolutions, homogenization, homogenized problems, solvability, a priori estimates, Laplace transform

Abstract

Initial boundary value problems for nonstationary equations of diffusion and filtration in weakly porous media are considered. Assertions about the solvability of such problems and the corresponding homogenized problems with convolutions are given. These statements are proved for general initial data and inhomogeneous initial conditions and are generalizations of classical results on the solvability of initial-boundary value problems for the heat equation. The proofs use the methods of a priori estimates and the well-known Agranovich–Vishik method, developed to study parabolic problems of general type.

References

Sandrakov G. V. The homogenization of nonstationary equations with contrast coefficients. Dokl. Mathematics. 1997. Vol. 56:1. P. 586–589.

Sandrakov G. V. Homogenization of parabolic equations with contrasting coefficients. Izvestiya: Math. 1999. Vol. 63:5. P. 1015–1061.

Sandrakov G. V. Multiphase models of nonstationary diffusion in homogenization. Comput. Math. Math. Phys. 2004. Vol. 44:10. P. 1741–1756.

Sandrakov G. V. Homogenization of variational inequalities for non-linear diffusion problems in perforated domains. Izvestiya: Math. 2005. Vol. 69:5. P. 1035–1059.

Sandrakov G. V. Multiphase homogenized diffusion models for problems with several parameters. Izvestiya: Mathematics. 2007. Vol. 71:6. P. 1193–1252.

Sandrakov G. V. Homogenization of some hydrodynamics problems. Modern problems of mathematics. modeling, computational methods and information technologies. Materials Int. Science. conf. March 2–4, 2018, Rivne. P. 156–157.

Sandrakov G. V. Modeling of hydrodynamics processes with phase transition. Information Technologies and Computer Modelling. Proceedings of the International Scientific Conf. 14–19 May 2018, Ivano-Frankivsk. P. 303–306.

Sandrakov G. V. Modeling of heterogeneous fluid dynamics with phase transition. Information Technologies in Education, Science and Technology. Proceedings of Int. Scientific-Practical Conf. 17–18 May 2018, Cherkasy. P. 142–143.

Sandrakov G. V. Modeling and homogenization of hydrodynamics processes with the vanishing viscosity. Int. School-Workshop on Differential Equations and Applications. 18–20 June, 2019, Vinnytsia. Book of Abstracts. P. 62–63.

Sandrakov G. V. Homogenized models with memory effects for composites. Int. School-Workshop on Differential Equations and Applications. 18-20 June, 2019, Vinnytsia. Book of Abstracts. P. 63–64.

Sandrakov G. V. Homogenized models for multiphase diffusion in porous media. Journal of Numerical and Applied Mathematics. 2019. No 3 (132). P. 43–59.

Hulianytskyi A. L. Weak solvability of the variable-order subdiffusion equation. Fractional Calculus and Applied Analysis 2020. Vol. 23:3. P. 920–934.

Duvaut G., Lions J.-L. Les inequations en mecanique et en physique. Dunod, Paris, 1972.

Amosov A. A., Zlotnik A. A. On quasi-averaged equations of the one-dimensional motion of a viscous barotropic medium with rapidly oscillating data. Comput. Math. Math. Phys. 1996. Vol. 36:2. P. 203–220.

Amosov A. A., Zlotnik A. A. On the quasi-averaging of a system of equations of the one-dimensional motion of a viscous heat-conducting gas with rapidly oscillating data. Comput. Math. Math. Phys. 1998. Vol. 38:7. P. 1152–1167.

Amosov A. A., Zlotnik A. A. Justification of two-scale averaging of equations of one-dimensional nonlinear thermoviscoelasticity with nonsmooth data. Comput. Math. Math. Phys. 2001. Vol. 41:11. P. 1630–1650.

Agranovich M. S., Vishik M. I. Elliptic problems with a parameter and parabolic problems of general type. Russian Math. Surveys 1964. Vol. 19:3. P. 53–157.

Bakhvalov N. S. and Panasenko G. P. Homogenization: averaging processes in periodic media. Kluwer, Dordrecht, 1989.

Published
2021-01-25