Abstract:
Variable order fractional operators can be used in various physical and biological applications where rates of change of the quantity of interest may depend on space and/or time. In this paper, we propose an explicit finite difference approximation for a space-time Riesz-Caputo variable order fractional wave equation with initial and boundary conditions in a finite domain. The proposed scheme is conditionally stable and has global truncation error $O(\tau^2+h^2)$. We also present a numerical experiment to verify the efficiency of the proposed scheme.
Key words:variable order fractional wave equation, Caputo time fractional derivative, Riesz space fractional derivative, explicit finite difference scheme.