TY - JOUR T1 - Numerical Solution of the Coupled System of Nonlinear Fractional Ordinary Differential Equations AU - Zhou , Xiaojun AU - Xu , Chuanju JO - Advances in Applied Mathematics and Mechanics VL - 3 SP - 574 EP - 595 PY - 2018 DA - 2018/05 SN - 9 DO - http://doi.org/10.4208/aamm.2015.m1054 UR - https://global-sci.org/intro/article_detail/aamm/12165.html KW - System of fractional ordinary differential equations, high order schema, stability and convergence analysis. AB -

In this paper, we consider the numerical method that is proposed and analyzed in [J. Cao and C. Xu, J. Comput. Phys., 238 (2013), pp. 154–168] for the fractional ordinary differential equations. It is based on the so-called block-by-block approach, which is a common method for the integral equations. We extend the technique to solve the nonlinear system of fractional ordinary differential equations (FODEs) and present a general technique to construct high order schemes for the numerical solution of the nonlinear coupled system of fractional ordinary differential equations (FODEs). By using the present method, we are able to construct a high order schema for nonlinear system of FODEs of the order $α$, $α>0$. The stability and convergence of the schema is rigorously established. Under the smoothness assumption $f,g ∈ C^4[0,T]$, we prove that the numerical solution converges to the exact solution with order $3+α$ for $0<α≤1$ and order $4$ for $α>1$. Some numerical examples are provided to confirm the theoretical claims.