Navier-Stokes analysis of Korn aerofoil

Two-dimensional Reynolds-averaged Navier-Stokes equations with algebraic turbulence model have been solved using a vertex-based finite-volume space discretization and an explicit five-stage Runge-Kutta time steps. A modified artificial dissipation based on the time-step limit for convective and diffusive equation has been used for numerical stability. The off-design behaviour of the supercritical Kern aerofoil in viscous transonic flow has been considered a good test case because the numerical scheme needs more accuracy to predict the appearance of double shocks. Results have been compared with experiments and the general behaviour of the aerofoil has been studied.