@Article{IJNAM-21-2, author = {Xu, Jie and Xie, Shusen and Hongfei, Fu}, title = {Two Decoupled and Linearized Block-Centered Finite Difference Methods for the Nonlinear Symmetric Regularized Long Wave Equation}, journal = {International Journal of Numerical Analysis and Modeling}, year = {2024}, volume = {21}, number = {2}, pages = {244--267}, abstract = {
In this paper, by introducing a new flux variable, two decoupled and linearized block-centered finite difference methods are developed and analyzed for the nonlinear symmetric regularized long wave equation, where the two-step backward difference formula and Crank-Nicolson temporal discretization combined with linear extrapolation technique are employed. Under a reasonable time stepsize ratio restriction, i.e., $∆t=o(h^{1/4}),$ second-order convergence for both the primal variable and its flux are rigorously proved on general non-uniform spatial grids. Moreover, based upon the convergence results and inverse estimate, stability of two methods are also demonstrated. Ample numerical experiments are presented to confirm the theoretical analysis.
}, issn = {2617-8710}, doi = {https://doi.org/10.4208/ijnam2024-1010}, url = {https://global-sci.com/article/91057/two-decoupled-and-linearized-block-centered-finite-difference-methods-for-the-nonlinear-symmetric-regularized-long-wave-equation} }