RICHARDS-KLUTE EQUATION’S SOLUTION STABILITY

Authors

DOI:

https://doi.org/10.15407/dopovidi2023.06.012

Keywords:

Richards-Klute equation, stability, initial conditions, boundary conditions

Abstract

The stability results of the Richards-Klute equation’s solution under perturbations of initial and boundary conditions are provided. The purpose of the article is to establish a priori estimates of the solution’s variation resulting from perturbations in the initial and boundary conditions. The primary finding demonstrates the boundedness of the solution’s variation by a linear function of the variation in the initial and boundary conditions. The case of a nonhomogeneous porous medium is also examined.

Downloads

Download data is not yet available.

References

Srivastava, R. & Jim Yeh, T.-C. (1991). Analytical Solutions for One-Dimensional, Transient Infiltration Toward the Water Table in Homogeneous and Layered Soil. Water Resources Research, 27, No. 5, pp. 753-762. https://doi.org/10.1029/90WR02772

Alt, H. W. & Luckhaus, S. (1983). Quasilinear elliptic-parabolic differential equations. Math. Z., 183, No. 1, pp. 311-341. https://doi.org/10.1007/BF01176474

Bertsch, M. & Husholf, J. (1986). Regularity Results for an Elliptic-Parabolic Free Boundary Problem. Transactions of the Amer. Math. Society, 297, No. 1, pp. 337-350. https://doi.org/10.2307/2000472

Egorov, A. G., Dautov, R. Z., Nieber, J. L. & Shevchukov, A. Y. (2003). Stability analysis of gravity-driven infiltrating flow. Water Resour. Res., 39, No. 9. https://doi.org/10.1029/2002WR001886.

Lyashko, S. I., Klyushin, D. A. & Tymoshenko, A. A. (2019). Optimal control over inserted point source intensity for humidification of a two-dimensional porous medium. Dopov. Nac. akad. nauk. Ukr., No. 12, pp. 13-18 (in Ukrainian). https://doi.org/10.15407/dopovidi2019.12.013

Farthing, M. W. & Ogden, F. L. (2017). Numerical Solution of Richards’ Equation: A Review of Advances and Challenges. Soil Science Society of Amer. Journal, 81, No. 6, pp. 1257-1269. https://doi.org/10.2136/sssaj2017.02.0058

Zha, Y., Yang, J., Zeng, J., Tso, C.-H. M., Zeng, W. & Shi, L. (2019). Review of numerical solution of Richardson– Richards equation for variably saturated flow in soils. WIREs Water, 6, P. e1364. https://doi.org/10.1002/wat2.1364

Celia, M., Bouloutas, E. & Zarba, R. (1990). A general mass-conservative numerical solution for the unsaturated flow equation. Water Resources Research, 26, No. 1. pp. 1483-1496. https://doi.org/10.1029/WR026i007p01483

Kolesnykov, V. (2023). Analysis of the construction of numerical methods for solving the Richards-Klute equation. Journal of Numerical and Appl. Math., No. 1, pp. 28-38 (in Ukrainian). https://doi.org/10.17721/2706-9699.2023.1.03

Suk, H. & Park, E. (2019). Numerical solution of the Kirchhoff-transformed Richards equation for simulating variably saturated flow in heterogeneous layered porous media. J. Hydrology, 579, No. 124213. https://doi.org/10.1016/j.jhydrol.2019.124213

Liu, F., Fukumoto, Y. & Zhao, X. (2023). A multi level linearized Crank–Nicolson scheme for Richards equation under variable flux boundary conditions. Appl. Analysis, 102, No. 6, pp. 1601-1617. https://doi.org/10.1080/00036811.2021.1992395

Khimich, O. M. & Sydoruk V. A. (2013). A hybrid algorithm for solving the linear equations system with sparse matrix using over relaxation method. Math. and comp. modeling. Series: Phys. and math. sci., 9, pp. 105-111 (in Ukrainian).

Pop, I. S., Radu, F. & Knabner, P. (2004). Mixed finite elements for the Richards’ equation: linearization procedure. J. Comp. and Appl. Math., 168, No. 1-2, pp. 365-373. https://doi.org/10.1016/j.cam.2003.04.008

Machado, G. J., Pereira, R. M. S., Clain, S., Araújo, N. & Lopes, S. O. (2022). A new stabilized scheme for a Richards’ equation with evapotranspiration. Groundwater for Sustainable Development, 17, No. 100736. https://doi.org/10.1016/j.gsd.2022.100736

Pedrozo, H. A., Rozenberger, M. R. & Shevzov, C. E. (2016). Stability analysis of the solution of the one- dimensional Richards equation by the finite difference method. AIP Conf. Proc., 1738, No. 480008. https://doi.org/10.1063/1.4952244

Published

06.01.2024

How to Cite

Kolesnykov, V., & Lyashko, S. (2024). RICHARDS-KLUTE EQUATION’S SOLUTION STABILITY. Reports of the National Academy of Sciences of Ukraine, (6), 12–18. https://doi.org/10.15407/dopovidi2023.06.012

Issue

Section

Information Science and Cybernetics