Abstract
Abstract
In this paper, the discontinuous Legendre wavelet Galerkin method is proposed for the numerical solution of the Burgers–Fisher and generalized Burgers–Fisher equations.
This method combines both the discontinuous Galerkin and the Legendre wavelet Galerkin methods.
Various properties of Legendre wavelets have been used to find the variational form of the governing equation.
This variational form transforms it into a system of ordinary differential equations which will be solved numerically. Some illustrative examples are presented to emphasize the efficiency and reliability of the proposed method.
Keywords
- Burgers–Fisher equation,
- Legendre wavelets,
- Operational matrix for derivative,
- Variational Form
References
- Chui (1997) SIAM
- Daubechies (1992) Society For Industrial and Applied Mathematics https://doi.org/10.1137/1.9781611970104
- Zheng and Wei (2019) Discontinuous Legendre wavelet element method for reaction-diffusion equation from mathematical chemistry 16(7) https://doi.org/10.1142/S021987621850113X
- Zhang and Zhang (2012) Direct discontinuous Galerkin method for the generalized Burgers’ Fisher equation 22(9) https://doi.org/10.1088/1674-1056/21/9/090206
- Malik et al. (2015) Numerical solution to generalized Burgers’–Fisher equation using exp-function method hybridized with heuristic computation 10(3) (pp. 1-15)
- Sahu and Saha Ray (2015) Two-dimensional Legendre wavelet method for the numerical solutions of fuzzy integro-differential equations 28(3) (pp. 1271-1279) https://doi.org/10.3233/IFS-141412
- Sahu and Saha Ray (2015) Legendre wavelets operational method for the numerical solutions of nonlinear Volterra integro-differential equations system (pp. 715-723)
- Saha Ray and Gupta (2015) Numerical solution of fractional partial differential equation of parabolic type with dirichlet boundary conditions using two-dimensional Legendre wavelets method 11(1) https://doi.org/10.1115/1.4028984
- Safdari et al. (2020) Shifted Chebyshev collocation of the fourth kind with convergence analysis for the space–time fractional advection–diffusion equation https://doi.org/10.1007/s00366-020-01092-x
- Aghdam et al. (2020) A computational approach for the space–time fractional advection–diffusion equation arising in contaminant transport through porous media https://doi.org/10.1007/s00366-020-01021-y
- Safdari et al. (2020) Convergence analysis of the space fractional-order diffusion equation based on the compact finite difference scheme https://doi.org/10.1007/s40314-020-1078-z
- Nikan et al. (2020) Numerical evaluation of fractional Tricomi-type model arising from physical problems of gas dynamics (pp. 205-216) https://doi.org/10.1016/j.jare.2020.06.018
- Nikan et al. (2021) Numerical solution of time-fractional fourth-order reaction–diffusion model arising in composite environments 89(1) (pp. 819-836) https://doi.org/10.1016/j.apm.2020.07.021
- Nikan et al. (2020) Numerical approximation of the time fractional cable model arising in neuronal dynamics https://doi.org/10.1007/s00366-020-01033-8
10.1007/s40096-020-00356-3