Solving the random Cauchy one-dimensional advection–diffusion equation: Numerical analysis and computing

摘要

In this paper, a random finite difference scheme to solve numerically the random Cauchy one-dimensional advection–diffusion partial differential equation is proposed and studied. Throughout our analysis both the advection and diffusion coefficients are assumed to be random variables while the deterministic initial condition is assumed to possess a discrete Fourier transform. For the sake of generality in our study, we consider that the advection and diffusion coefficients are statistical dependent random variables. Under mild conditions on the data, it is demonstrated that the proposed random numerical scheme is mean square consistent and stable. Finally, the theoretical results are illustrated by means of two numerical examples.