A 2D CFD study of symmetrical airfoils PART I: in isolated flow

摘要

This paper deals with the application of Computational Fluid Dynamics (CFD) to the analysis of the aerodynamic characteristics of symmetrical airfoil blades in 2-Dimensional isolated flow. The CFD model was first developed by analysing with different solver parameters and the validating against published experimental results for the NACA 0012 blade profile. The model was solved as compressible flow using a Navier-Stokes solver with transition fixed at 5% of the chordlength. It is shown that the lift forces were predicted accurately and also that significant improvement in drag prediction over previous CFL models was achieved. The validated model was then used to compare different proposed airfoil profiles for the Wells Turbine.