A nonlinear iteration method for solving a two-dimensional nonlinear coupled system of parabolic and hyperbolic equations

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Abstract

A nonlinear iteration method for solving a class of two-dimensional nonlinear coupled systems of parabolic and hyperbolic equations is studied. A simple iterative finite difference scheme is designed; the calculation complexity is reduced by decoupling the nonlinear system, and the precision is assured by timely evaluation updating. A strict theoretical analysis is carried out as regards the convergence and approximation properties of the iterative scheme, and the related stability and approximation properties of the nonlinear fully implicit finite difference (FIFD) scheme. The iterative algorithm has a linear constringent ratio; its solution gives a second-order spatial approximation and first-order temporal approximation to the real solution. The corresponding nonlinear FIFD scheme is stable and gives the same order of approximation. Numerical tests verify the results of the theoretical analysis. The discrete functional analysis and inductive hypothesis reasoning techniques used in this paper are helpful for overcoming difficulties arising from the nonlinearity and coupling and lead to a related theoretical analysis for nonlinear FI schemes. © 2009 Elsevier B.V. All rights reserved.

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Cui, X., & Yue, J. yan. (2010). A nonlinear iteration method for solving a two-dimensional nonlinear coupled system of parabolic and hyperbolic equations. Journal of Computational and Applied Mathematics, 234(2), 343–364. https://doi.org/10.1016/j.cam.2009.12.028

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