A Local Integral Equation Formulation Based on Moving Kriging Interpolation for Solving Coupled Nonlinear Reaction-Diffusion Equations

Autor: Kanittha Yimnak, Anirut Luadsong
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Advances in Mathematical Physics, Vol 2014 (2014)
Druh dokumentu: article
ISSN: 1687-9120
1687-9139
DOI: 10.1155/2014/196041
Popis: The meshless local Pretrov-Galerkin method (MLPG) with the test function in view of the Heaviside step function is introduced to solve the system of coupled nonlinear reaction-diffusion equations in two-dimensional spaces subjected to Dirichlet and Neumann boundary conditions on a square domain. Two-field velocities are approximated by moving Kriging (MK) interpolation method for constructing nodal shape function which holds the Kronecker delta property, thereby enhancing the arrangement nodal shape construction accuracy, while the Crank-Nicolson method is chosen for temporal discretization. The nonlinear terms are treated iteratively within each time step. The developed formulation is verified in two numerical examples with investigating the convergence and the accuracy of numerical results. The numerical experiments revealing the solutions by the developed formulation are stable and more precise.
Databáze: Directory of Open Access Journals
Externí odkaz: