Numerical Simulation of Turbulent Flow past Airfoils on OpenFOAM

AbstractThe attached boundary turbulent flow around two different airfoils at low Mach number condition are numerically simulated using the v2-f and S-A RANS models, and the performance is evaluated. The numerical platform is an open source CFD code based on the Field Operation and Manipulation C++ class library for continuum mechanics (OpenFOAM).In the simulation, the pressure field is obtained with SIMPLE algorithm. The advective volume-face fluxes are approximated using second-order TVD scheme/ limited linear differencing. The velocity profile and the aerodynamic parameters of the conventional airfoil at 0° attack angle and the supercritical airfoil at 4° attack angle are simulated, and compared with the experiment data respectively. The result indicates that the solution of v2-f turbulence model is comparable with that of S-A model for conventional airfoil computation, but it is better for the supercritical airfoil computation, especially at the positions with strong pressure gradient and streamline curvatures