Application of SPD-RBF method of lines for solving nonlinear advection-diffusion-reaction equation with variable coefficients

Purpose The purpose of this study is to use the method of lines to solve the two-dimensional nonlinear advection-diffusion-reaction equation with variable coefficients. Design/methodology/approach The strictly positive definite radial basis functions collocation method together with the decomposition of the interpolation matrix is used to turn the problem into a system of nonlinear first-order differential equations. Then a numerical solution of this system is computed by changing in the classical fourth-order Runge-Kutta method as well. Findings Several test problems are provided to confirm the validity and efficiently of the proposed method. Originality/value For the first time, some famous examples are solved by using the proposed high-order technique.