On the use of subcycling for solving the compressible Navier-Stokes equations by operator-splitting and finite element methods

In this paper we discuss the solution of the compressible Navier‐Stokes equations by numerical techniques combining finite element approximations, operator splitting for the time discretization and numerical treatment of the nonlinearities by subcycling, which in this context means that we perform on the basic time discretization interval a time integration by a standard numerical scheme for initial‐value problems (explicit schemes in this paper). Numerical results for flows around a NACA 0012 aerofoil are presented.